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  • Provide A Scrolling "Camera" View Over A 2D Game Map

    - by BitCrash
    I'm in the process of attempting to create a 2D MMO type game with Kryonet and some basic sprites, mostly for my own learning. I have the back end set up great (By my standards) and I'm moving on to actually getting some things drawn onto the map. I cannot for the life of me figure out a solid way to have a "Camera" follow a player around a large area. The view pane for the game is 640 x 480 pixels, and each tile is 32x32 pixels (Thats 20 tiles wide and 15 high for the viewpane) I have tried a couple things to do this, but they did not seem to work out so well. I had a JScrollPane with 9 "Viewpane"-sized canvases in it, and tried to have the JScrollPane move in accordance with the player. The issue came when I reached the end of the JScrollPane. I tried to "Flip" canvases, sending the canvas currrently drawing the player to the middle of the 9 and load the corresponding maps onto the other ones. It was slow and worked poorly. I'm looking for any advice or previous experience with this; any ideas? Thank you! Edit and Clarification: I did not mean to mention Kryonet, I was merely providing peripheral information in case there was something that would help which I could not foresee. Instead of having an array of 9 canvases, why not just have one large canvas loading a large map every once in a while? I'm willing to have "load times" where as with the canvas array I would have none (in theory) to give the user a smooth experience. I could just change the size and location of the map with a modified setBounds() call on the canvas in a layered pane (layered because I have hidden swing items, like inventories and stuff) I'll try it out and post here how it goes for people asking the same question.

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  • New Online Learning Library (OLL) content

    - by Irina
    Looking to brush up on OAM or OVD skills? Want some help with OIM? Well, have you checked our Online Learning Library (OLL) recently? OLL is a great way to pickup new skills in short blocks of time, and there is an enormous selection, on a diverse set of products. Every month these trainings get hundreds or thousands of hits. It would be worth your while to spend some time just poking around the nooks and crannies for items that interest you.A smattering of new OBEs and other content have recently become available, and if you haven't already, you might want to check them out: Identity Management: Business Scenarios Business and IT – Collaborative Access Review Sign Off and Closed Loop Identity Certification Oracle Identity Governance: End to End integration From Oracle Identity Manager to a Target Webservice Oracle Identity Manager: Configuring SOA Composite Oracle Identity Manager: Web Services Connector - Overview How to do a basic Oracle Virtual Directory (OVD) Setup? How to setup a simple Oracle Virtual Directory (OVD) Join? Installing Oracle Access Manager: Identity Server and WebPass  Also new is an Oracle University 5-day class you might want to investigate: Oracle Access Manager R2: Administration Essentials An OAM Advanced Administration class is in the works and should be available late summer or fall, so keep your calendar clear! Be sure to let us know in the Comments if there is a training you would find useful. Happy Trails :)

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  • Grub not loading after Windows 8 Install

    - by RazorXsr
    My system was configured to dual boot Ubuntu 12.04.1 LTS and Windows 7. Today I got my hands on the MSDN release of Windows 8 and I installed it over my Windows 7. Now the computer just boots to Windows 8 directly without loading the GRUB screen. So I followed the steps as suggested in: https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows. Running this command: ls -l /dev/disk/by-label/ gives the following output: total 0 lrwxrwxrwx 1 root root 10 Sep 11 07:51 Entertainment -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 11 02:45 PENDRIVE -> ../../sdb1 Also fdisk -l command gives this as the output: Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1246aa23 Device Boot Start End Blocks Id System /dev/sda1 * 2048 319582199 159790076 7 HPFS/NTFS/exFAT /dev/sda2 319582208 602906623 141662208 7 HPFS/NTFS/exFAT /dev/sda3 602908672 625135615 11113472 83 Linux Disk /dev/sdb: 1939 MB, 1939865600 bytes 64 heads, 63 sectors/track, 939 cylinders, total 3788800 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdb1 * 2248 3788799 1893276 c W95 FAT32 (LBA) So I assume that I have to run this: sudo grub-install /dev/sda3 to get GRUB up and running. But I am getting this error: /usr/sbin/grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?). Can anyone please guide me in the right direction? The current Ubuntu installation is far too customized to my needs to lose it to a boot manager issue! Any help is much appreciated!

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  • "bug" in C++11 text by Stroustrup?

    - by Astara
    I found an apparent contradiction in the c++ text having to do with the result of the c_str() function operating on std:strings (in my copy, the definition and contradiction are on p1040). First it defines the c_str() function as something that produces a 'C-style' (zero-terminated) string, but later it talks about how a C++ c_str value can have embed a 'C'-style, end-of-string terminators (i.e. NUL's) embedded in the string (that is defined by being NUL terminated). Um... does anyone else feel that this is a 'stretching' of the definition of a C-string beyond it's definition? I.e. I think what it means, is that if you were to look at the length() function as applied to the string, it will show a different end of string than using the C-definition of a z-string -- one that can contain any character except NUL, and is terminated by NUL. I likely don't have to worry about it in my of my programs, but it seems like a subtle distinction that makes a C++ c_str, not really a 'C'-string. Am I misunderstanding this issue? Thanks!

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  • Black Screen after installing recommended Nvidia drivers. What to do?

    - by former_Windows_user
    New to Ubuntu. Problem description: Until recently I had Windows on my computer. My hard disk is divided into two partitions. On the first one (app. 10 GB) I had my Windows XP On the second one (app. 30 GB) I have some data I tried to install Ubuntu 12.04 on the first partition (the smaller one). Since I wanted to keep the data on my second partition, I chose the third install option. During the installation process I deleted the data on partition one, created a new partition with the same size, formatted it as ext4 and mounted / on it. The installation continued fine and at the end I restarted and took the CD out when it ejected automatically (it could have been also before the restart). Ubuntu started but I noticed that my computer was slow. Then a prompt appeared telling me that I did not have the optimal NVidia drivers and recommended to install a specific one. I clicked on the recommended driver, installation went apparently just fine and at the end I had to restart the system again. I did it, Ubuntu started, asked for my password, I typed it, pressed Enter, the screen turned black and remained like that (only the cursor was there and I could move it). I restarted and the same thing happened again. Has anyone had such a problem before and was able to solve it? With Windows I always installed drivers from CDs after installing Windows. Are the same CDs going to work for Ubuntu too or I should find special drivers? P.S. During the installation I was connected to the internet and I agreed on installing updates and the third party software. In the time before I installed that problematic but recommended NVidia driver I checked that there was between 6 and 7 GB free space on the first partition where I installed Ubuntu.

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  • How can I get rid of the motd message "*** /dev/sdb1 will be checked for errors at next reboot ***"? [duplicate]

    - by kmm
    This question already has an answer here: Persistent “disk will be checked…” in the message of the day (motd) even after reboot 3 answers My motd persistently has: *** /dev/sdb1 will be checked for errors at next reboot *** The problem is that I don't have /dev/sdb1 on my system. I only have /dev/sdb2 (mouted as /) and /dev/sda1 which mounts to /media/backup. I delete that line from /etc/motd, but it reappears after reboot. Here's my df output: Filesystem Size Used Avail Use% Mounted on /dev/sdb2 73G 3.7G 66G 6% / udev 490M 4.0K 490M 1% /dev tmpfs 200M 760K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 498M 0 498M 0% /run/shm /dev/sda1 1.9T 429G 1.4T 25% /media/backup Update Here is the output of sudo fdisk -l Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003dfc2 Device Boot Start End Blocks Id System /dev/sda1 63 3907024064 1953512001 83 Linux Disk /dev/sdb: 80.0 GB, 80026361856 bytes 255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00049068 Device Boot Start End Blocks Id System /dev/sdb1 152301568 156301311 1999872 82 Linux swap / Solaris /dev/sdb2 * 2048 152301567 76149760 83 Linux Partition table entries are not in disk order I guess /dev/sdb1 is my swap space.

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  • What is the best approach for deploying apps to companies

    - by Supercell
    What is the best approach for the following scenario: 1) A publicly available app (available in app stores) which is used by end users to make use of services offered by multiple companies. 2) These companies maintain their services also using a mobile app. I'm not sure on how to solve the second part. Having one app for both enduser and admin functionality, secured by username/password doesn't sound like a good idea. This would leave the only option of developing a separate admin application for the companies. What is the best approach to deploy "admin" like mobile apps to companies only, for Android, iOS and Windows Phone? Some additional information: Public App ---- Servers ----- Multiple Company Apps The public app shows all companies offering their services. An end user uses the public app to order something from a specific company. The order is sent to our servers. Our servers send the order to the associated company. This order is displayed on the company's admin app and given the option to accept the order.

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  • designing solution to dynamically load class

    - by dot
    Background Information I have a web app that allows end users to connect to ssh-enabled devices and manipulate them. Right now, i only support one version of firmware. The logic is something like this: user clicks on a button to run some command on device. web application looks up the class name containing the correct ssh interface for the device, using the device's model name. (because the number of hardware models is so small, i have a list that's hardcoded in my web app) web app creates a new ssh object using the class loaded in step 2. ssh command is run and session closed. command results displayed on web page. This all works fine. Now the end user wants me to be able to support multiple versions of firmware. But the catch is, they don't want to have to document the firmware version anywhere becuase the amount of overhead this will create in maintaining the system database. In other words, I can't look up the firmware version based on the device. The good news is that it sounds like at most, I'll have to support two different versions of firmware per device. One option is to name the the classes like this: deviceX.1.php deviceX.2.php deviceY.1.php deviceY.2.php where "X" and "Y" represent the model names, and 1 and 2 represent the firmware versions. When a user runs a command, I will first try it with one of the class files, if it fails, i can try with the second. I think always try the newer version of firmware first... so let's say in the above example, I would load deviceX.2.php before deviceX.1.php. This will work, but it's not very efficient. But I can't think of another way around this. Any suggestions?

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  • How do you make a precise countdown timer using clock_gettime? [migrated]

    - by Joshun
    Could somebody please explain how to make a countdown timer using clock_gettime, under Linux. I know you can use the clock() function to get cpu time, and multiply it by CLOCKS_PER_SEC to get actual time, but I'm told the clock() function is not well suited for this. So far I have attempted this (a billion is to pause for one second) #include <stdio.h> #include <time.h> #define BILLION 1000000000 int main() { struct timespec rawtime; clock_gettime(CLOCK_MONOTONIC_RAW, &rawtime); unsigned long int current = ( rawtime.tv_sec + rawtime.tv_nsec ); unsigned long int end = (( rawtime.tv_sec + rawtime.tv_nsec ) + BILLION ); while ( current < end ) { clock_gettime(CLOCK_MONOTONIC_RAW, &rawtime); current = ( rawtime.tv_sec + rawtime.tv_nsec ); } return 0; } I know this wouldn't be very useful on its own, but once I've found out how to time correctly I can use this in my projects. I know that sleep() can be used for this purpose, but I want to code the timer myself so that I can better integrate it in my projects - such as the possibility of it returning the time left, as opposed to pausing the whole program.

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  • Handling timeout in network application

    - by user2175831
    How can I handle timeouts in a network application. I'm implementing a provisioning system on a Linux server, the code is huge so I'm going to put the algorithm, it works as like this Read provisioning commands from file Send it to another server using TCP Save the request in hash. Receive the response then if successful response received then remove request from hash if failed response received then retry the message The problem I'm in now is when the program didn't receive the response for a timeout reason then the request will be waiting for a response forever and won't be retried. And please note that I'll be sending hundreds of commands and I have to monitor the timeout commands for all of them. I tried to use timer but that didn't help because I'll end up with so many waiting timers and I'm not sure if this is a good way of doing this. The question is how can I save the message in some data structure and check to remove or retry it later when there is no response from the other end? Please note that I'm willing to change the algorithm to anything you suggest that could deal with the timeouts.

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  • Mounting a new hard drive (sda1) to my existing filesystem

    - by shank22
    I tried to read some posts regarding mounting a new hard drive, but I am facing some problem. My new hard drive is sda1. The output of sudo fdisk -l is: sudo fdisk -l Disk /dev/sdb: 999.7 GB, 999653638144 bytes 255 heads, 63 sectors/track, 121534 cylinders, total 1952448512 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00016485 Device Boot Start End Blocks Id System /dev/sdb1 * 2048 1935822847 967910400 83 Linux /dev/sdb2 1935824894 1952446463 8310785 5 Extended /dev/sdb5 1935824896 1952446463 8310784 82 Linux swap / Solaris Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x78dbcdc1 Device Boot Start End Blocks Id System /dev/sda1 2048 1953521663 976759808 7 HPFS/NTFS/exFAT What should be done to add this new sda1 hard drive on booting up? What should be added in the /etc/fstab file? I have not performed any partition on the new sda1 drive. I need help on how to proceed from scratch and can't afford to take any risk. Please help!

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  • Why does Ubuntu 12.10 Beta2 insist on commiting changes to the partition table?

    - by Uten
    Why does Ubuntu 12.10 Beta2 insist on commiting changes to the partition table even as no real changes has been done? This is a show stopper for me as I'm installing without a CD/DVD ROM. This is how I go about it. I downloaded the iso image and extracted vmlinuz and initrd.lz to the same folder I keep the iso image. Configured grub (0.9x) to boot /ubuntu/vmlinuz with the iso image like this: title ubuntu live-cd kernel /ubuntu/vmlinuz boot=casper iso-scan/filename=/ubuntu/ubuntu-12.10-beta2-desktop-i386.iso ro quiet splash initrd /ubuntu/initrd.lz boot This works well and I get a running livecd session. The iso image is mounted on /isomedia (or something similar). The spare HD space where I want to install Ubuntu is in the logical area (at the wery end of the disk). I have tried both to use the space as empty and preformated with ext4. After selecting the partition and selecting "use as ext4" and selecting a mountpoint (/) I get the message: "The installer needs to commit changes to partition tables, but cannot do so because partitions on the following mount points could not be unmounted" "/isomedia" (or something similar). Is this a "feature" of the installer? To insist that everything is unmounted even if no changes is nescesary (as fare as I understand). It's probably a safety feature but is it needed? I have cahnged layouts with parted and gparted (at the end of the disk) for years without any failures. I understand that booting the iso image like this is not the common way. But it is just such a beautifull way of doing it when you hav a running system and want to play with another. Any one had any success installing Ubuntu (12.10 beta2 ) like this? Best regards Uten

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  • how to speed up this code? [migrated]

    - by dot
    I have some code that's taking over 3 seconds to complete. I'm just wondering if there's a faster way to do this. I have a string with anywhere from 10 to 70 rows of data. I break it up into an array and then loop through the array to find specific patterns. $this->_data = str_replace(chr(27)," ",$this->_data,$count);//strip out esc character $this->_data = explode("\r\n", $this->_data); $detailsArray = array(); foreach ($this->_data as $details) { $pattern = '/(\s+)([0-9a-z]*)(\s+)(100\/1000T|10|1000SX|\s+)(\s*)(\|)(\s+)(\w+)(\s+)(\w+)(\s+)(\w+)(\s+)(1000FDx|10HDx|100HDx|10FDx|100FDx|\s+)(\s*)(\w+)(\s*)(\w+|\s+)(\s*)(0)/i'; if (preg_match($pattern, $details, $matches)) { array_push($detailsArray, array( 'Port' => $matches[2], 'Type' => $matches[4], 'Alert' => $matches[8], 'Enabled' => $matches[10], 'Status' => $matches[12], 'Mode' => $matches[14], 'MDIMode' => $matches[16], 'FlowCtrl' => $matches[18], 'BcastLimit' => $matches[20])); }//end if }//end for $this->_data = $detailsArray; Just wondering if you think there's a way to make it more efficient. Thanks.

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  • c++ accumulate with move instead of copy [migrated]

    - by user74399
    I have the following code auto adder = [](string& s1, const string& s2)->string&& { if (!s1.empty()) s1 += " "; s1 += s2; return move(s1); }; string test; test.reserve(wordArray.size() * 10); string words = accumulate(wordArray.begin(), wordArray.end(), move(test), adder); What I would like here is to avoid string copying. Unfortunately this is not accomplished by the vs2012 implementation of accumulate. Internally accumulate calls another function _Accumulate and the rvalue functionality gets lost in the process. It I instead call the _Accumulate function like so string words = Accumulate(wordArray.begin(), wordArray.end(), move(test), adder); I get the intended performance gain. Must the std library be rewritten to take rvalue arguments into consideration? Is there some other way I may use accumulate to accomplish what I want without cheating to much?

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  • Implementation of ZipCrypto / Zip 2.0 encryption in java

    - by gomesla
    I'm trying o implement the zipcrypto / zip 2.0 encryption algoritm to deal with encrypted zip files as discussed in http://www.pkware.com/documents/casestudies/APPNOTE.TXT I believe I've followed the specs but just can't seem to get it working. I'm fairly sure the issue has to do with my interpretation of the crc algorithm. The documentation states CRC-32: (4 bytes) The CRC-32 algorithm was generously contributed by David Schwaderer and can be found in his excellent book "C Programmers Guide to NetBIOS" published by Howard W. Sams & Co. Inc. The 'magic number' for the CRC is 0xdebb20e3. The proper CRC pre and post conditioning is used, meaning that the CRC register is pre-conditioned with all ones (a starting value of 0xffffffff) and the value is post-conditioned by taking the one's complement of the CRC residual. Here is the snippet that I'm using for the crc32 public class PKZIPCRC32 { private static final int CRC32_POLYNOMIAL = 0xdebb20e3; private int crc = 0xffffffff; private int CRCTable[]; public PKZIPCRC32() { buildCRCTable(); } private void buildCRCTable() { int i, j; CRCTable = new int[256]; for (i = 0; i <= 255; i++) { crc = i; for (j = 8; j > 0; j--) if ((crc & 1) == 1) crc = (crc >>> 1) ^ CRC32_POLYNOMIAL; else crc >>>= 1; CRCTable[i] = crc; } } private int crc32(byte buffer[], int start, int count, int lastcrc) { int temp1, temp2; int i = start; crc = lastcrc; while (count-- != 0) { temp1 = crc >>> 8; temp2 = CRCTable[(crc ^ buffer[i++]) & 0xFF]; crc = temp1 ^ temp2; } return crc; } public int crc32(int crc, byte buffer) { return crc32(new byte[] { buffer }, 0, 1, crc); } } Below is my complete code. Can anyone see what I'm doing wrong. package org.apache.commons.compress.archivers.zip; import java.io.IOException; import java.io.InputStream; public class ZipCryptoInputStream extends InputStream { public class PKZIPCRC32 { private static final int CRC32_POLYNOMIAL = 0xdebb20e3; private int crc = 0xffffffff; private int CRCTable[]; public PKZIPCRC32() { buildCRCTable(); } private void buildCRCTable() { int i, j; CRCTable = new int[256]; for (i = 0; i <= 255; i++) { crc = i; for (j = 8; j > 0; j--) if ((crc & 1) == 1) crc = (crc >>> 1) ^ CRC32_POLYNOMIAL; else crc >>>= 1; CRCTable[i] = crc; } } private int crc32(byte buffer[], int start, int count, int lastcrc) { int temp1, temp2; int i = start; crc = lastcrc; while (count-- != 0) { temp1 = crc >>> 8; temp2 = CRCTable[(crc ^ buffer[i++]) & 0xFF]; crc = temp1 ^ temp2; } return crc; } public int crc32(int crc, byte buffer) { return crc32(new byte[] { buffer }, 0, 1, crc); } } private static final long ENCRYPTION_KEY_1 = 0x12345678; private static final long ENCRYPTION_KEY_2 = 0x23456789; private static final long ENCRYPTION_KEY_3 = 0x34567890; private InputStream baseInputStream = null; private final PKZIPCRC32 checksumEngine = new PKZIPCRC32(); private long[] keys = null; public ZipCryptoInputStream(ZipArchiveEntry zipEntry, InputStream inputStream, String passwd) throws Exception { baseInputStream = inputStream; // Decryption // ---------- // PKZIP encrypts the compressed data stream. Encrypted files must // be decrypted before they can be extracted. // // Each encrypted file has an extra 12 bytes stored at the start of // the data area defining the encryption header for that file. The // encryption header is originally set to random values, and then // itself encrypted, using three, 32-bit keys. The key values are // initialized using the supplied encryption password. After each byte // is encrypted, the keys are then updated using pseudo-random number // generation techniques in combination with the same CRC-32 algorithm // used in PKZIP and described elsewhere in this document. // // The following is the basic steps required to decrypt a file: // // 1) Initialize the three 32-bit keys with the password. // 2) Read and decrypt the 12-byte encryption header, further // initializing the encryption keys. // 3) Read and decrypt the compressed data stream using the // encryption keys. // Step 1 - Initializing the encryption keys // ----------------------------------------- // // Key(0) <- 305419896 // Key(1) <- 591751049 // Key(2) <- 878082192 // // loop for i <- 0 to length(password)-1 // update_keys(password(i)) // end loop // // Where update_keys() is defined as: // // update_keys(char): // Key(0) <- crc32(key(0),char) // Key(1) <- Key(1) + (Key(0) & 000000ffH) // Key(1) <- Key(1) * 134775813 + 1 // Key(2) <- crc32(key(2),key(1) >> 24) // end update_keys // // Where crc32(old_crc,char) is a routine that given a CRC value and a // character, returns an updated CRC value after applying the CRC-32 // algorithm described elsewhere in this document. keys = new long[] { ENCRYPTION_KEY_1, ENCRYPTION_KEY_2, ENCRYPTION_KEY_3 }; for (int i = 0; i < passwd.length(); ++i) { update_keys((byte) passwd.charAt(i)); } // Step 2 - Decrypting the encryption header // ----------------------------------------- // // The purpose of this step is to further initialize the encryption // keys, based on random data, to render a plaintext attack on the // data ineffective. // // Read the 12-byte encryption header into Buffer, in locations // Buffer(0) thru Buffer(11). // // loop for i <- 0 to 11 // C <- buffer(i) ^ decrypt_byte() // update_keys(C) // buffer(i) <- C // end loop // // Where decrypt_byte() is defined as: // // unsigned char decrypt_byte() // local unsigned short temp // temp <- Key(2) | 2 // decrypt_byte <- (temp * (temp ^ 1)) >> 8 // end decrypt_byte // // After the header is decrypted, the last 1 or 2 bytes in Buffer // should be the high-order word/byte of the CRC for the file being // decrypted, stored in Intel low-byte/high-byte order. Versions of // PKZIP prior to 2.0 used a 2 byte CRC check; a 1 byte CRC check is // used on versions after 2.0. This can be used to test if the password // supplied is correct or not. byte[] encryptionHeader = new byte[12]; baseInputStream.read(encryptionHeader); for (int i = 0; i < encryptionHeader.length; i++) { encryptionHeader[i] ^= decrypt_byte(); update_keys(encryptionHeader[i]); } } protected byte decrypt_byte() { byte temp = (byte) (keys[2] | 2); return (byte) ((temp * (temp ^ 1)) >> 8); } @Override public int read() throws IOException { // // Step 3 - Decrypting the compressed data stream // ---------------------------------------------- // // The compressed data stream can be decrypted as follows: // // loop until done // read a character into C // Temp <- C ^ decrypt_byte() // update_keys(temp) // output Temp // end loop int read = baseInputStream.read(); read ^= decrypt_byte(); update_keys((byte) read); return read; } private final void update_keys(byte ch) { keys[0] = checksumEngine.crc32((int) keys[0], ch); keys[1] = keys[1] + (byte) keys[0]; keys[1] = keys[1] * 134775813 + 1; keys[2] = checksumEngine.crc32((int) keys[2], (byte) (keys[1] >> 24)); } }

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  • dynamic multiple instance of swfupload (firefox vs IE)

    - by jean27
    We have this dynamic uploader which creates a new instance of swfupload. I'm a little bit confused with the outputs produced by firefox and ie. Firefox have the same output as chrome, safari and opera. Whenever I clicked a button for adding a new instance, the previous instances of swfupload in firefox refresh while IE don't. I have this debug information: For Firefox: SWF DEBUG OUTPUT IN FIREFOX ---SWFUpload Instance Info--- Version: 2.2.0 2009-03-25 Movie Name: SWFUpload_0 Settings: upload_url: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== flash_url: /content/swfupload.swf?preventswfcaching=1272512466022 use_query_string: false requeue_on_error: false http_success: assume_success_timeout: 0 file_post_name: Filedata post_params: [object Object] file_types: .jpg;.gif;.png;.bmp file_types_description: Image Files file_size_limit: 1MB file_upload_limit: 1 file_queue_limit: 1 debug: true prevent_swf_caching: true button_placeholder_id: file-1_swf button_placeholder: Not Set button_image_url: /content/images/blankButton.png button_width: 109 button_height: 22 button_text: button_text_style: color: #000000; font-size: 16pt; button_text_top_padding: 1 button_text_left_padding: 30 button_action: -110 button_disabled: false custom_settings: [object Object] Event Handlers: swfupload_loaded_handler assigned: true file_dialog_start_handler assigned: true file_queued_handler assigned: true file_queue_error_handler assigned: true upload_start_handler assigned: true upload_progress_handler assigned: true upload_error_handler assigned: true upload_success_handler assigned: true upload_complete_handler assigned: true debug_handler assigned: true SWF DEBUG: SWFUpload Init CompleteSWF DEBUG: SWF DEBUG: ----- SWF DEBUG OUTPUT ---- SWF DEBUG: Build Number: SWFUPLOAD 2.2.0 SWF DEBUG: movieName: SWFUpload_0 SWF DEBUG: Upload URL: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== SWF DEBUG: File Types String: .jpg;.gif;.png;.bmp SWF DEBUG: Parsed File Types: jpg,gif,png,bmp SWF DEBUG: HTTP Success: 0 SWF DEBUG: File Types Description: Image Files (.jpg;.gif;.png;.bmp) SWF DEBUG: File Size Limit: 1048576 bytes SWF DEBUG: File Upload Limit: 1 SWF DEBUG: File Queue Limit: 1 SWF DEBUG: Post Params: SWF DEBUG: ----- END SWF DEBUG OUTPUT ---- SWF DEBUG: SWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: .jpg;.gif;.png;.bmpSWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...SWF DEBUG: Event: fileQueued : File ID: SWFUpload_0_0SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1---SWFUpload Instance Info--- Version: 2.2.0 2009-03-25 Movie Name: SWFUpload_1 Settings: upload_url: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== flash_url: /content/swfupload.swf?preventswfcaching=1272512476357 use_query_string: false requeue_on_error: false http_success: assume_success_timeout: 0 file_post_name: Filedata post_params: [object Object] file_types: .jpg;.gif;.png;.bmp file_types_description: Image Files file_size_limit: 1MB file_upload_limit: 1 file_queue_limit: 1 debug: true prevent_swf_caching: true button_placeholder_id: file-2_swf button_placeholder: Not Set button_image_url: /content/images/blankButton.png button_width: 109 button_height: 22 button_text: button_text_style: color: #000000; font-size: 16pt; button_text_top_padding: 1 button_text_left_padding: 30 button_action: -110 button_disabled: false custom_settings: [object Object] Event Handlers: swfupload_loaded_handler assigned: true file_dialog_start_handler assigned: true file_queued_handler assigned: true file_queue_error_handler assigned: true upload_start_handler assigned: true upload_progress_handler assigned: true upload_error_handler assigned: true upload_success_handler assigned: true upload_complete_handler assigned: true debug_handler assigned: true SWF DEBUG: SWFUpload Init CompleteSWF DEBUG: SWF DEBUG: ----- SWF DEBUG OUTPUT ---- SWF DEBUG: Build Number: SWFUPLOAD 2.2.0 SWF DEBUG: movieName: SWFUpload_1 SWF DEBUG: Upload URL: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== SWF DEBUG: File Types String: .jpg;.gif;.png;.bmp SWF DEBUG: Parsed File Types: jpg,gif,png,bmp SWF DEBUG: HTTP Success: 0 SWF DEBUG: File Types Description: Image Files (.jpg;.gif;.png;.bmp) SWF DEBUG: File Size Limit: 1048576 bytes SWF DEBUG: File Upload Limit: 1 SWF DEBUG: File Queue Limit: 1 SWF DEBUG: Post Params: SWF DEBUG: ----- END SWF DEBUG OUTPUT ---- SWF DEBUG: SWF DEBUG: SWFUpload Init CompleteSWF DEBUG: SWF DEBUG: ----- SWF DEBUG OUTPUT ---- SWF DEBUG: Build Number: SWFUPLOAD 2.2.0 SWF DEBUG: movieName: SWFUpload_0 SWF DEBUG: Upload URL: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== SWF DEBUG: File Types String: .jpg;.gif;.png;.bmp SWF DEBUG: Parsed File Types: jpg,gif,png,bmp SWF DEBUG: HTTP Success: 0 SWF DEBUG: File Types Description: Image Files (.jpg;.gif;.png;.bmp) SWF DEBUG: File Size Limit: 1048576 bytes SWF DEBUG: File Upload Limit: 1 SWF DEBUG: File Queue Limit: 1 SWF DEBUG: Post Params: SWF DEBUG: ----- END SWF DEBUG OUTPUT ---- SWF DEBUG: SWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: .jpg;.gif;.png;.bmpSWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...SWF DEBUG: Event: fileQueued : File ID: SWFUpload_1_0SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1SWF DEBUG: StartUpload: First file in queueSWF DEBUG: StartUpload(): No files found in the queue.SWF DEBUG: StartUpload: First file in queueSWF DEBUG: Event: uploadStart : File ID: SWFUpload_1_0SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload. Starting upload to /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== for File ID: SWFUpload_1_0SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_1_0SWF DEBUG: Event: uploadProgress: File ID: SWFUpload_1_0. Bytes: 30218. Total: 30218SWF DEBUG: Event: uploadSuccess: File ID: SWFUpload_1_0 Response Received: true Data: 65-AddClassification.pngSWF DEBUG: Event: uploadComplete : Upload cycle complete. For IE: SWF DEBUG OUTPUT IN IE ---SWFUpload Instance Info--- Version: 2.2.0 2009-03-25 Movie Name: SWFUpload_0 Settings: upload_url: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== flash_url: /content/swfupload.swf?preventswfcaching=1272512200531 use_query_string: false requeue_on_error: false http_success: assume_success_timeout: 0 file_post_name: Filedata post_params: [object Object] file_types: .jpg;.gif;.png;.bmp file_types_description: Image Files file_size_limit: 1MB file_upload_limit: 1 file_queue_limit: 1 debug: true prevent_swf_caching: true button_placeholder_id: file-1_swf button_placeholder: Not Set button_image_url: /content/images/blankButton.png button_width: 109 button_height: 22 button_text: Browse... button_text_style: color: #000000; font-size: 16pt; button_text_top_padding: 1 button_text_left_padding: 30 button_action: -110 button_disabled: false custom_settings: [object Object] Event Handlers: swfupload_loaded_handler assigned: true file_dialog_start_handler assigned: true file_queued_handler assigned: true file_queue_error_handler assigned: true upload_start_handler assigned: true upload_progress_handler assigned: true upload_error_handler assigned: true upload_success_handler assigned: true upload_complete_handler assigned: true debug_handler assigned: true SWF DEBUG: SWFUpload Init CompleteSWF DEBUG: SWF DEBUG: ----- SWF DEBUG OUTPUT ---- SWF DEBUG: Build Number: SWFUPLOAD 2.2.0 SWF DEBUG: movieName: SWFUpload_0 SWF DEBUG: Upload URL: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== SWF DEBUG: File Types String: .jpg;.gif;.png;.bmp SWF DEBUG: Parsed File Types: jpg,gif,png,bmp SWF DEBUG: HTTP Success: 0 SWF DEBUG: File Types Description: Image Files (.jpg;.gif;.png;.bmp) SWF DEBUG: File Size Limit: 1048576 bytes SWF DEBUG: File Upload Limit: 1 SWF DEBUG: File Queue Limit: 1 SWF DEBUG: Post Params: SWF DEBUG: ----- END SWF DEBUG OUTPUT ---- SWF DEBUG: Removing Flash functions hooks (this should only run in IE and should prevent memory leaks)SWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: .jpg;.gif;.png;.bmpSWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...SWF DEBUG: Event: fileQueued : File ID: SWFUpload_0_0SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1---SWFUpload Instance Info--- Version: 2.2.0 2009-03-25 Movie Name: SWFUpload_1 Settings: upload_url: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== flash_url: /content/swfupload.swf?preventswfcaching=1272512222093 use_query_string: false requeue_on_error: false http_success: assume_success_timeout: 0 file_post_name: Filedata post_params: [object Object] file_types: .jpg;.gif;.png;.bmp file_types_description: Image Files file_size_limit: 1MB file_upload_limit: 1 file_queue_limit: 1 debug: true prevent_swf_caching: true button_placeholder_id: file-2_swf button_placeholder: Not Set button_image_url: /content/images/blankButton.png button_width: 109 button_height: 22 button_text: Browse... button_text_style: color: #000000; font-size: 16pt; button_text_top_padding: 1 button_text_left_padding: 30 button_action: -110 button_disabled: false custom_settings: [object Object] Event Handlers: swfupload_loaded_handler assigned: true file_dialog_start_handler assigned: true file_queued_handler assigned: true file_queue_error_handler assigned: true upload_start_handler assigned: true upload_progress_handler assigned: true upload_error_handler assigned: true upload_success_handler assigned: true upload_complete_handler assigned: true debug_handler assigned: true SWF DEBUG: SWFUpload Init CompleteSWF DEBUG: SWF DEBUG: ----- SWF DEBUG OUTPUT ---- SWF DEBUG: Build Number: SWFUPLOAD 2.2.0 SWF DEBUG: movieName: SWFUpload_1 SWF DEBUG: Upload URL: /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== SWF DEBUG: File Types String: .jpg;.gif;.png;.bmp SWF DEBUG: Parsed File Types: jpg,gif,png,bmp SWF DEBUG: HTTP Success: 0 SWF DEBUG: File Types Description: Image Files (.jpg;.gif;.png;.bmp) SWF DEBUG: File Size Limit: 1048576 bytes SWF DEBUG: File Upload Limit: 1 SWF DEBUG: File Queue Limit: 1 SWF DEBUG: Post Params: SWF DEBUG: ----- END SWF DEBUG OUTPUT ---- SWF DEBUG: Removing Flash functions hooks (this should only run in IE and should prevent memory leaks)SWF DEBUG: ExternalInterface reinitializedSWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: .jpg;.gif;.png;.bmpSWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...SWF DEBUG: Event: fileQueued : File ID: SWFUpload_1_0SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1SWF DEBUG: StartUpload: First file in queueSWF DEBUG: Event: uploadStart : File ID: SWFUpload_0_0SWF DEBUG: StartUpload: First file in queueSWF DEBUG: Event: uploadStart : File ID: SWFUpload_1_0SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload. Starting upload to /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== for File ID: SWFUpload_0_0SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload. Starting upload to /86707/listing/asynchronousuploadphoto/87085/15/E1ptdReNMwcU/cUkx4p689ChPRZYMKkLZQ== for File ID: SWFUpload_1_0SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_0_0SWF DEBUG: Event: uploadProgress: File ID: SWFUpload_0_0. Bytes: 29151. Total: 29151SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_1_0SWF DEBUG: Event: uploadProgress: File ID: SWFUpload_1_0. Bytes: Total: 30218SWF DEBUG: Event: uploadSuccess: File ID: SWFUpload_0_0 Response Received: true Data: 62-Greenwich_-_Branches.pngSWF DEBUG: Event: uploadComplete : Upload cycle complete.

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  • program not working as expected!

    - by wilson88
    Can anyone just help spot why my program is not returning the expected output.related to my previous question.Am passing a vector by refrence, I want to see whats in the container before I copy them to another loaction.if u remove comments on loadRage, u will see bids are generated by the trader. #include <iostream> #include <vector> #include <string> #include <algorithm> #include <cstdlib> #include <iomanip> using namespace std; const int NUMSELLER = 1; const int NUMBUYER = 1; const int NUMBIDS = 20; const int MINQUANTITY = 1; const int MAXQUANTITY = 30; const int MINPRICE =100; const int MAXPRICE = 150; int s=0; int trdId; // Bid, simple container for values struct Bid { int bidId, trdId, qty, price; char type; // for sort and find. bool operator<(const Bid &other) const { return price < other.price; } bool operator==(int bidId) const { return this->bidId == bidId; } }; // alias to the list, make type consistent typedef vector<Bid> BidList; // this class generates bids! class Trader { private: int nextBidId; public: Trader(); Bid getNextBid(); Bid getNextBid(char type); // generate a number of bids void loadRange(BidList &, int size); void loadRange(BidList &, char type, int size); void setVector(); }; Trader::Trader() : nextBidId(1) {} #define RAND_RANGE(min, max) ((rand() % (max-min+1)) + min) Bid Trader::getNextBid() { char type = RAND_RANGE('A','B'); return getNextBid(type); } Bid Trader::getNextBid(char type) { for(int i = 0; i < NUMSELLER+NUMBUYER; i++) { // int trdId = RAND_RANGE(1,9); if (s<10){trdId=0;type='A';} else {trdId=1;type='B';} s++; int qty = RAND_RANGE(MINQUANTITY, MAXQUANTITY); int price = RAND_RANGE(MINPRICE, MAXPRICE); Bid bid = {nextBidId++, trdId, qty, price, type}; return bid; } } //void Trader::loadRange(BidList &list, int size) { // for (int i=0; i<size; i++) { list.push_back(getNextBid()); } //} // //void Trader::loadRange(BidList &list, char type, int size) { // for (int i=0; i<size; i++) { list.push_back(getNextBid(type)); } //} //---------------------------AUCTIONEER------------------------------------------- class Auctioneer { vector<Auctioneer> List; Trader trader; vector<Bid> list; public: Auctioneer(){}; void accept_bids(const BidList& bid); }; typedef vector<Auctioneer*> bidlist; void Auctioneer::accept_bids(const BidList& bid){ BidList list; //copy (BidList.begin(),BidList.end(),list); } //all the happy display commands void show(const Bid &bid) { cout << "\tBid\t(" << setw(3) << bid.bidId << "\t " << setw(3) << bid.trdId << "\t " << setw(3) << bid.type <<"\t " << setw(3) << bid.qty <<"\t " << setw(3) << bid.price <<")\t\n " ; } void show(const BidList &list) { cout << "\t\tBidID | TradID | Type | Qty | Price \n\n"; for(BidList::const_iterator itr=list.begin(); itr != list.end(); ++itr) { //cout <<"\t\t"; show(*itr); cout << endl; } cout << endl; } //search now checks for failure void show(const char *msg, const BidList &list) { cout << msg << endl; show(list); } void searchTest(BidList &list, int bidId) { cout << "Searching for Bid " << bidId << endl; BidList::const_iterator itr = find(list.begin(), list.end(), bidId); if (itr==list.end()) { cout << "Bid not found."; } else { cout << "Bid has been found. Its : "; show(*itr); } cout << endl; } //comparator function for price: returns true when x belongs before y bool compareBidList(Bid one, Bid two) { if (one.type == 'A' && two.type == 'B') return (one.price < two.price); return false; } void sort(BidList &bidlist) { sort(bidlist.begin(), bidlist.end(), compareBidList); } int main(int argc, char **argv) { Trader trader; BidList bidlist; Auctioneer auctioneer; //bidlist list; auctioneer.accept_bids(bidlist); //trader.loadRange(bidlist, NUMBIDS); show("Bids before sort:", bidlist); sort(bidlist); show("Bids after sort:", bidlist); system("pause"); return 0; }

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  • How to hide graph on button click ?

    - by aman-gupta
    Hi, In my application I m using following codes to draw a graph but I want that graph will be displayed on button click :- import @interface frmGraphView : UIView { } @end ///////////////////// // // frmGraphView.m // UV Alarm // // Created by Aman on 4/4/10. // Copyright 2010 MyCompanyName. All rights reserved. // import "frmGraphView.h" @implementation frmGraphView struct TCo_ordinates { float x; float y; }; (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { // Initialization code } return self; } /* // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } */ /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ -(void)drawHGrid { //struct gridForXYaxis *gridForX = (struct gridForX *) calloc(sizeof(struct gridFor)) } (void)drawRect:(CGRect)rect { ifdef _DEBUG NSLog(@"frmGraph_drawRect_start"); endif CGContextRef ctx = UIGraphicsGetCurrentContext(); struct TCo_ordinates *tCoordianates; //creating the object of structure. float fltX1,fltX2,fltY1,fltY2=0; //Dividing the Y-axis ifdef _DEBUG NSLog(@"Start drawing Y-Axis"); endif fltX1 = 25; fltY1 = 2; fltX2 = fltX1; fltY2 = 254; //CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextSetLineWidth(ctx, 2.0); CGContextMoveToPoint(ctx, fltX1, fltY1); CGContextAddLineToPoint(ctx, fltX2, fltY2); NSArray *hoursInDays = [[NSArray alloc] initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"11",@"12", nil]; NSMutableArray *yAxisCoordinates = [[[NSMutableArray alloc] init] autorelease]; for(int intIndex = 0 ; intIndex < [hoursInDays count] ; fltY2-=20, intIndex++) { ifdef _DEBUG NSLog(@"Start of the partition of y axis"); endif //CGContextSetRGBStrokeColor(ctx, 2, 2, 2, 1); //CGContextSetRGBStrokeColor(ctx, 1.0f/255.0f, 1.0f/255.0f, 1.0f/255.0f, 1.0f); //to draw the black line. CGContextMoveToPoint(ctx, fltX1-3 , fltY2-20); CGContextAddLineToPoint(ctx, fltX1+3, fltY2-20); CGContextSelectFont(ctx, "Helvetica", 12.0, kCGEncodingMacRoman); CGContextSetTextDrawingMode(ctx, kCGTextFill); //CGContextSetRGBFillColor(ctx, 0, 255, 255, 1); CGContextSetStrokeColorWithColor(ctx, [UIColor blueColor].CGColor); CGAffineTransform xform = CGAffineTransformMake( 1.0, 0.0, 0.0, -1.0, 0.0, 0.0); CGContextSetTextMatrix(ctx, xform); const char *arrayDataForYAxis = [[hoursInDays objectAtIndex:intIndex] UTF8String]; CGContextShowTextAtPoint(ctx,fltX1-20 , fltY2-15, arrayDataForYAxis, strlen(arrayDataForYAxis)); CGContextStrokePath(ctx); ifdef _DEBUG NSLog(@"End of the partition of graph"); endif //NSValue *yAxis = [NSValue valueWithCGPoint:CGPointMake((tCoordianates-x = fltX1-21), (tCoordianates-y = fltY2-20))]; // [yAxisCoordinates addObject:yAxis]; ifdef _DEBUG // NSLog(@"The value of yAxisCoordintes: %@", yAxisCoordinates); endif } ifdef _DEBUG NSLog(@"End of drawing Y-Axis"); endif //Dividing the X-axis ifdef _DEBUG NSLog(@"Start drawing X-Axis"); endif fltX1 = 25; fltY1 = 255; fltX2 = 320; fltY2 = fltY1; CGContextMoveToPoint(ctx, fltX1, fltY1); CGContextAddLineToPoint(ctx, fltX2, fltY2); //CGContextSetRGBStrokeColor(ctx, 2, 2, 2, 1); CGContextSetLineWidth(ctx, 2.0); NSArray *weekDays =[[NSArray alloc] initWithObjects:@"Sun", @"Mon", @"Tue", @"Wed", @"Thu", @"Fri", @"Sat", nil]; NSMutableArray *xAxisCoordinates = [[[NSMutableArray alloc] init] autorelease]; for(int intIndex = 0 ; intIndex < [weekDays count] ; fltX1+=40, intIndex++) { //CGContextSetRGBStrokeColor(ctx, 2, 2, 2, 1); //CGContextSetStrokeColorWithColor(ctx, [UIColor orangeColor].CGColor); CGContextMoveToPoint(ctx, fltX1+40 , fltY2-3); CGContextAddLineToPoint(ctx, fltX1+40, fltY2+3); CGContextSelectFont(ctx, "Italic", 12.0, kCGEncodingMacRoman); CGContextSetTextDrawingMode(ctx, kCGTextFill); CGContextSetStrokeColorWithColor(ctx, [UIColor blueColor].CGColor); CGAffineTransform xform = CGAffineTransformMake( 1.0, 0.0, 0.0, -1.0, 0.0, 0.0); CGContextSetTextMatrix(ctx, xform); const char *arrayDataForXAxis = [[weekDays objectAtIndex:intIndex] UTF8String]; CGContextShowTextAtPoint(ctx, fltX1+27, fltY2+20 , arrayDataForXAxis, strlen(arrayDataForXAxis)); CGContextStrokePath(ctx); ifdef _DEBUG NSLog(@"End of drawing X-Axis"); endif //NSValue *xAxis = [NSValue valueWithCGPoint:CGPointMake((tCoordianates->x = fltX1+40), (tCoordianates->y = fltY2+18))]; // [xAxisCoordinates addObject:xAxis]; ifdef _DEBUG //NSLog(@"The value of xAxisCoordintes: %@", xAxisCoordinates); NSLog(@"frmGraph_drawRect_end"); endif } CGContextSetLineWidth(ctx, 10.0); fltX1 = 25; fltY1 = 235; fltX2 = 320; fltY2 = fltY1; NSArray *coordinate1 = [[NSArray alloc] initWithObjects:@"65",@"105",@"145",@"185",@"225",@"265",@"305",nil]; NSArray *coordinate2 = [[NSArray alloc] initWithObjects:@"214",@"174",@"154",@"134",@"114",@"74",@"34",nil]; ifdef _DEBUG NSLog(@"Fuction of Bar_start"); endif for(int intIndex = 0; intIndex < [coordinate1 count], intIndex < [coordinate2 count]; fltX1+=40, intIndex++) { //CGContextSetRGBFillColor(ctx, 0, 0, 245, 1); CGContextMoveToPoint(ctx, fltX1+40, fltY2+19); const char *arrayDataForCoordinate1 = [[coordinate1 objectAtIndex:intIndex] UTF8String]; const char *arrayDataForCoordinate2 = [[coordinate2 objectAtIndex:intIndex] UTF8String]; CGContextAddLineToPoint(ctx, (atof(arrayDataForCoordinate1)), atof(arrayDataForCoordinate2)); } ifdef _DEBUG NSLog(@"Fuction of Bar_end"); endif CGContextClosePath(ctx); CGContextStrokePath(ctx); [hoursInDays release]; [weekDays release]; [coordinate1 release]; [coordinate2 release]; hoursInDays = nil; weekDays = nil; coordinate1 = nil; coordinate2 = nil; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } (void)dealloc { [super dealloc]; } @end please help me out its urgent

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  • Implementation of Nib project to Storyboard, Xcode

    - by Blake Loizides
    I have made a tabbed bar application in storyboard in xcode. I,m new to xcode. I got a Sample TableView XIB project from apple that I edited to my needs,The project has a UITableView that I Customized with Images, And with help of a certain forum member I was able to link up each image to a New View Controller. I tried to port or integrate My Nib Project Code to my StoryBoard Tabbed Bar Application.I thought I had everything right had to comment out a few things to get no errors, But the project only goes to a Blank Table View. Below are 2 links, 1 to my StoryBoard Tabbed Bar Application with the Table Code that I tried to integrate and the other My Successful Nib Project. Also is some code and pictures. If anybody has some free time and does not mind to help I would be extremely grateful for any input given. link1 - Storyboard link2 - XIB DecorsViewController_iPhone.m // // TableViewsViewController.m // TableViews // // Created by Axit Patel on 9/2/10. // Copyright Bayside High School 2010. All rights reserved. // #import "DecorsViewController_iPhone.h" #import "SelectedCellViewController.h" @implementation DecorsViewController_iPhone #pragma mark - Synthesizers @synthesize sitesArray; @synthesize imagesArray; #pragma mark - View lifecycle // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { // Load up the sitesArray with a dummy array : sites NSArray *sites = [[NSArray alloc] initWithObjects:@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"h", nil]; self.sitesArray = sites; //[sites release]; UIImage *PlumTree = [UIImage imageNamed:@"a.png"]; UIImage *CherryRoyale = [UIImage imageNamed:@"b.png"]; UIImage *MozambiqueWenge = [UIImage imageNamed:@"c.png"]; UIImage *RoyaleMahogany = [UIImage imageNamed:@"d.png"]; UIImage *Laricina = [UIImage imageNamed:@"e.png"]; UIImage *BurntOak = [UIImage imageNamed:@"f.png"]; UIImage *AutrianOak = [UIImage imageNamed:@"g.png"]; UIImage *SilverAcacia = [UIImage imageNamed:@"h.png"]; NSArray *images = [[NSArray alloc] initWithObjects: PlumTree, CherryRoyale, MozambiqueWenge, RoyaleMahogany, Laricina, BurntOak, AutrianOak, SilverAcacia, nil]; self.imagesArray = images; //[images release]; [super viewDidLoad]; } #pragma mark - Table View datasource methods // Required Methods // Return the number of rows in a section - (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section { return [sitesArray count]; } // Returns cell to render for each row - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"CellIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; // Configure cell NSUInteger row = [indexPath row]; // Sets the text for the cell //cell.textLabel.text = [sitesArray objectAtIndex:row]; // Sets the imageview for the cell cell.imageView.image = [imagesArray objectAtIndex:row]; // Sets the accessory for the cell cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; // Sets the detailtext for the cell (subtitle) //cell.detailTextLabel.text = [NSString stringWithFormat:@"This is row: %i", row + 1]; return cell; } // Optional // Returns the number of section in a table view -(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView { return 1; } #pragma mark - #pragma mark Table View delegate methods // Return the height for each cell -(CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return 78; } // Sets the title for header in the tableview -(NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return @"Decors"; } // Sets the title for footer -(NSString *) tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section { return @"Decors"; } // Sets the indentation for rows -(NSInteger) tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath { return 0; } // Method that gets called from the "Done" button (From the @selector in the line - [viewControllerToShow.navigationItem setRightBarButtonItem:[[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(dismissView)] autorelease]];) - (void)dismissView { [self dismissViewControllerAnimated:YES completion:NULL]; } // This method is run when the user taps the row in the tableview - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:YES]; SelectedCellViewController *viewControllerToShow = [[SelectedCellViewController alloc] initWithNibName:@"SelectedCellViewController" bundle:[NSBundle mainBundle]]; [viewControllerToShow setLabelText:[NSString stringWithFormat:@"You selected cell: %d - %@", indexPath.row, [sitesArray objectAtIndex:indexPath.row]]]; [viewControllerToShow setImage:(UIImage *)[imagesArray objectAtIndex:indexPath.row]]; [viewControllerToShow setModalPresentationStyle:UIModalPresentationFormSheet]; [viewControllerToShow setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal]; [viewControllerToShow.navigationItem setRightBarButtonItem:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(dismissView)]]; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewControllerToShow]; viewControllerToShow = nil; [self presentViewController:navController animated:YES completion:NULL]; navController = nil; // UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Tapped row!" // message:[NSString stringWithFormat:@"You tapped: %@", [sitesArray objectAtIndex:indexPath.row]] // delegate:nil // cancelButtonTitle:@"Yes, I did!" // otherButtonTitles:nil]; // [alert show]; // [alert release]; } #pragma mark - Memory management - (void)didReceiveMemoryWarning { NSLog(@"Memory Warning!"); [super didReceiveMemoryWarning]; } - (void)viewDidUnload { self.sitesArray = nil; self.imagesArray = nil; [super viewDidUnload]; } //- (void)dealloc { //[sitesArray release]; //[imagesArray release]; // [super dealloc]; //} //@end //- (void)viewDidUnload //{ // [super viewDidUnload]; // Release any retained subviews of the main view. //} - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } else { return YES; } } @end DecorsViewController_iPhone.h #import <UIKit/UIKit.h> @interface DecorsViewController_iPhone : UIViewController <UITableViewDelegate, UITableViewDataSource> { NSArray *sitesArray; NSArray *imagesArray; } @property (nonatomic, retain) NSArray *sitesArray; @property (nonatomic, retain) NSArray *imagesArray; @end SelectedCellViewController.m #import "SelectedCellViewController.h" @implementation SelectedCellViewController @synthesize labelText; @synthesize image; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) { } return self; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } #pragma mark - View lifecycle - (void)viewDidLoad { [super viewDidLoad]; [label setText:self.labelText]; [imageView setImage:self.image]; } - (void)viewDidUnload { self.labelText = nil; self.image = nil; // [label release]; // [imageView release]; [super viewDidUnload]; } - (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } @end SelectedCellViewController.h @interface SelectedCellViewController : UIViewController { NSString *labelText; UIImage *image; IBOutlet UILabel *label; IBOutlet UIImageView *imageView; } @property (nonatomic, copy) NSString *labelText; @property (nonatomic, retain) UIImage *image; @end

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  • iOS bluetooth low energy not detecting peripherals

    - by user3712524
    My app won't detect peripherals. Im using light blue to simulate a bluetooth low energy peripheral and my app just won't sense it. I even installed light blue on two devices to make sure it was generating a peripheral signal properly and it is. Any suggestions? My labels are updating and the NSLog is showing that the scanning is starting. Thanks in advance. #import <UIKit/UIKit.h> #import <CoreBluetooth/CoreBluetooth.h> @interface ViewController : UIViewController @property (weak, nonatomic) IBOutlet UITextField *navDestination; @end #import "ViewController.h" @implementation ViewController - (IBAction)connect:(id)sender { } - (IBAction)navDestination:(id)sender { NSString *destinationText = self.navDestination.text; } - (void)viewDidLoad { } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end #import <UIKit/UIKit.h> #import "ViewController.h" @interface BlueToothViewController : UIViewController @property (strong, nonatomic) CBCentralManager *centralManager; @property (strong, nonatomic) CBPeripheral *discoveredPerepheral; @property (strong, nonatomic) NSMutableData *data; @property (strong, nonatomic) IBOutlet UITextView *textview; @property (weak, nonatomic) IBOutlet UILabel *charLabel; @property (weak, nonatomic) IBOutlet UILabel *isConnected; @property (weak, nonatomic) IBOutlet UILabel *myPeripherals; @property (weak, nonatomic) IBOutlet UILabel *aLabel; - (void)centralManagerDidUpdateState:(CBCentralManager *)central; - (void)centralManger:(CBCentralManager *)central didDiscoverPeripheral: (CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI; -(void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error; -(void)cleanup; -(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral; -(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error; -(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error; -(void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error; -(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error; -(void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error; @end @interface BlueToothViewController () @end @implementation BlueToothViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { _centralManager = [[CBCentralManager alloc]initWithDelegate:self queue:nil options:nil]; _data = [[NSMutableData alloc]init]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [_centralManager stopScan]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)centralManagerDidUpdateState:(CBCentralManager *)central { //you should test all scenarios if (central.state == CBCentralManagerStateUnknown) { self.aLabel.text = @"I dont do anything because my state is unknown."; return; } if (central.state == CBCentralManagerStatePoweredOn) { //scan for devices [_centralManager scanForPeripheralsWithServices:nil options:@{ CBCentralManagerScanOptionAllowDuplicatesKey : @YES }]; NSLog(@"Scanning Started"); } if (central.state == CBCentralManagerStateResetting) { self.aLabel.text = @"I dont do anything because my state is resetting."; return; } if (central.state == CBCentralManagerStateUnsupported) { self.aLabel.text = @"I dont do anything because my state is unsupported."; return; } if (central.state == CBCentralManagerStateUnauthorized) { self.aLabel.text = @"I dont do anything because my state is unauthorized."; return; } if (central.state == CBCentralManagerStatePoweredOff) { self.aLabel.text = @"I dont do anything because my state is powered off."; return; } } - (void)centralManger:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI { NSLog(@"Discovered %@ at %@", peripheral.name, RSSI); self.myPeripherals.text = [NSString stringWithFormat:@"%@%@",peripheral.name, RSSI]; if (_discoveredPerepheral != peripheral) { //save a copy of the peripheral _discoveredPerepheral = peripheral; //and connect NSLog(@"Connecting to peripheral %@", peripheral); [_centralManager connectPeripheral:peripheral options:nil]; self.aLabel.text = [NSString stringWithFormat:@"%@", peripheral]; } } -(void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error { NSLog(@"Failed to connect"); [self cleanup]; } -(void)cleanup { //see if we are subscribed to a characteristic on the peripheral if (_discoveredPerepheral.services != nil) { for (CBService *service in _discoveredPerepheral.services) { if (service.characteristics != nil) { for (CBCharacteristic *characteristic in service.characteristics) { if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"508EFF8E-F541-57EF-BD82-B0B4EC504CA9"]]) { if (characteristic.isNotifying) { [_discoveredPerepheral setNotifyValue:NO forCharacteristic:characteristic]; return; } } } } } } [_centralManager cancelPeripheralConnection:_discoveredPerepheral]; } -(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral { NSLog(@"Connected"); [_centralManager stopScan]; NSLog(@"Scanning stopped"); self.isConnected.text = [NSString stringWithFormat:@"Connected"]; [_data setLength:0]; peripheral.delegate = self; [peripheral discoverServices:nil]; } -(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error { if (error) { [self cleanup]; return; } for (CBService *service in peripheral.services) { [peripheral discoverCharacteristics:nil forService:service]; } //discover other characteristics } -(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error { if (error) { [self cleanup]; return; } for (CBCharacteristic *characteristic in service.characteristics) { [peripheral setNotifyValue:YES forCharacteristic:characteristic]; } } -(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error { if (error) { NSLog(@"Error"); return; } NSString *stringFromData = [[NSString alloc]initWithData:characteristic.value encoding:NSUTF8StringEncoding]; self.charLabel.text = [NSString stringWithFormat:@"%@", stringFromData]; //Have we got everything we need? if ([stringFromData isEqualToString:@"EOM"]) { [_textview setText:[[NSString alloc]initWithData:self.data encoding:NSUTF8StringEncoding]]; [peripheral setNotifyValue:NO forCharacteristic:characteristic]; [_centralManager cancelPeripheralConnection:peripheral]; } } -(void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error { if ([characteristic.UUID isEqual:nil]) { return; } if (characteristic.isNotifying) { NSLog(@"Notification began on %@", characteristic); } else { [_centralManager cancelPeripheralConnection:peripheral]; } } -(void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error { _discoveredPerepheral = nil; self.isConnected.text = [NSString stringWithFormat:@"Connecting..."]; [_centralManager scanForPeripheralsWithServices:nil options:@{ CBCentralManagerScanOptionAllowDuplicatesKey : @YES}]; } @end

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  • Why download popup window in browser not showing up when using JAX-RS v.s. standard servlet?

    - by masato-san
    When I try using standard servlet approach, in my browser the popup window shows up asking me whether to open .xls file or save it. I tried the exactly same code via JAX-RS and the browser popup won't show up somehow. Has anyone encounter this mystery? Standard servlet that works: package local.test.servlet; import java.io.IOException; import java.net.URL; import java.net.URLDecoder; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import local.test.jaxrs.ExcellaTestResource; import org.apache.poi.ss.usermodel.Workbook; import org.bbreak.excella.core.BookData; import org.bbreak.excella.core.exception.ExportException; import org.bbreak.excella.reports.exporter.ExcelExporter; import org.bbreak.excella.reports.exporter.ReportBookExporter; import org.bbreak.excella.reports.model.ConvertConfiguration; import org.bbreak.excella.reports.model.ReportBook; import org.bbreak.excella.reports.model.ReportSheet; import org.bbreak.excella.reports.processor.ReportProcessor; @WebServlet(name="ExcelServlet", urlPatterns={"/ExcelServlet"}) public class ExcelServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { //C:\Users\m-takayashiki\.netbeans\6.9\config\GF3\domain1 // ================== ?????? ======================= URL templateFileUrl = ExcellaTestResource.class.getResource("?????????.xls"); // /C:/Users/m-takayashiki/Documents/NetBeansProjects/KogaAlpha/build/web/WEB-INF/classes/local/test/jaxrs/?????????.xls System.out.println(templateFileUrl.getPath()); String templateFilePath = URLDecoder.decode(templateFileUrl.getPath(), "UTF-8"); String outputFileDir = "MasatoExcelHorizontalOutput"; ReportProcessor reportProcessor = new ReportProcessor(); ReportBook outputBook = new ReportBook(templateFilePath, outputFileDir, ExcelExporter.FORMAT_TYPE); ReportSheet outputSheet = new ReportSheet("??????"); outputBook.addReportSheet(outputSheet); // ======================================================== // --------------- ?????? ------------------------- reportProcessor.addReportBookExporter(new OutputStreamExporter(response)); System.out.println("wtf???"); reportProcessor.process(outputBook); System.out.println("done!!"); } catch(Exception e) { System.out.println(e); } } //end doGet() @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } }//end class class OutputStreamExporter extends ReportBookExporter { private HttpServletResponse response; public OutputStreamExporter(HttpServletResponse response) { this.response = response; } @Override public String getExtention() { return null; } @Override public String getFormatType() { return ExcelExporter.FORMAT_TYPE; } @Override public void output(Workbook book, BookData bookdata, ConvertConfiguration configuration) throws ExportException { System.out.println(book.getFirstVisibleTab()); System.out.println(book.getSheetName(0)); //TODO write to stream try { response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-Disposition", "attachment; filename=masatoExample.xls"); book.write(response.getOutputStream()); response.getOutputStream().close(); System.out.println("booya!!"); } catch(Exception e) { System.out.println(e); } } }//end class JAX-RS way that won't display popup: package local.test.jaxrs; import java.net.URL; import java.net.URLDecoder; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.ws.rs.core.Context; import javax.ws.rs.core.UriInfo; import javax.ws.rs.Path; import javax.ws.rs.GET; import javax.ws.rs.Produces; import org.apache.poi.ss.usermodel.Workbook; import org.bbreak.excella.core.BookData; import org.bbreak.excella.core.exception.ExportException; import org.bbreak.excella.reports.exporter.ExcelExporter; import org.bbreak.excella.reports.exporter.ReportBookExporter; import org.bbreak.excella.reports.model.ConvertConfiguration; import org.bbreak.excella.reports.model.ReportBook; import org.bbreak.excella.reports.model.ReportSheet; import org.bbreak.excella.reports.processor.ReportProcessor; @Path("excellaTest") public class ExcellaTestResource { @Context private UriInfo context; @Context private HttpServletResponse response; @Context private HttpServletRequest request; public ExcellaTestResource() { } @Path("horizontalProcess") @GET //@Produces("application/vnd.ms-excel") @Produces("application/vnd.ms-excel") public void getProcessHorizontally() { try { //C:\Users\m-takayashiki\.netbeans\6.9\config\GF3\domain1 // ================== ?????? ======================= URL templateFileUrl = this.getClass().getResource("?????????.xls"); // /C:/Users/m-takayashiki/Documents/NetBeansProjects/KogaAlpha/build/web/WEB-INF/classes/local/test/jaxrs/?????????.xls System.out.println(templateFileUrl.getPath()); String templateFilePath = URLDecoder.decode(templateFileUrl.getPath(), "UTF-8"); String outputFileDir = "MasatoExcelHorizontalOutput"; ReportProcessor reportProcessor = new ReportProcessor(); ReportBook outputBook = new ReportBook(templateFilePath, outputFileDir, ExcelExporter.FORMAT_TYPE); ReportSheet outputSheet = new ReportSheet("??????"); outputBook.addReportSheet(outputSheet); // ======================================================== // --------------- ?????? ------------------------- reportProcessor.addReportBookExporter(new OutputStreamExporter(response)); System.out.println("wtf???"); reportProcessor.process(outputBook); System.out.println("done!!"); } catch(Exception e) { System.out.println(e); } //return response; return; } }//end class class OutputStreamExporter extends ReportBookExporter { private HttpServletResponse response; public OutputStreamExporter(HttpServletResponse response) { this.response = response; } @Override public String getExtention() { return null; } @Override public String getFormatType() { return ExcelExporter.FORMAT_TYPE; } @Override public void output(Workbook book, BookData bookdata, ConvertConfiguration configuration) throws ExportException { //TODO write to stream try { response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-Disposition", "attachment; filename=masatoExample.xls"); book.write(response.getOutputStream()); response.getOutputStream().close(); System.out.println("booya!!"); } catch(Exception e) { System.out.println(e); } } }//end class

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  • what "Debug Assertion Failed" mean and how to fix it, c++?

    - by nonon
    hi, why this program gives me a "Debug Assertion Failed" Error Message while running #include "stdafx.h" #include "iostream" #include "fstream" #include "string" using namespace std; int conv_ch(char b) { int f; f=b; b=b+0; switch(b) { case 48: f=0; break; case 49: f=1; break; case 50: f=2; break; case 51: f=3; break; case 52: f=4; break; case 53: f=5; break; case 54: f=6; break; case 55: f=7; break; case 56: f=8; break; case 57: f=9; break; default: f=0; } return f; } class Student { public: string id; size_t id_len; string first_name; size_t first_len; string last_name; size_t last_len; string phone; size_t phone_len; string grade; size_t grade_len; void print(); void clean(); }; void Student::clean() { id.erase (id.begin()+6, id.end()); first_name.erase (first_name.begin()+15, first_name.end()); last_name.erase (last_name.begin()+15, last_name.end()); phone.erase (phone.begin()+10, phone.end()); grade.erase (grade.begin()+2, grade.end()); } void Student::print() { int i; for(i=0;i<6;i++) { cout<<id[i]; } cout<<endl; for(i=0;i<15;i++) { cout<<first_name[i]; } cout<<endl; for(i=0;i<15;i++) { cout<<last_name[i]; } cout<<endl; for(i=0;i<10;i++) { cout<<phone[i]; } cout<<endl; for(i=0;i<2;i++) { cout<<grade[i]; } cout<<endl; } int main() { Student k[80]; char data[1200]; int length,i,recn=0; int rec_length; int counter = 0; fstream myfile; char x1,x2; char y1,y2; char zz; int ad=0; int ser,j; myfile.open ("example.txt",ios::in); int right; int left; int middle; string key; while(!myfile.eof()){ myfile.get(data,1200); char * pch; pch = strtok (data, "#"); printf ("%s\n", pch); j=0; for(i=0;i<6;i++) { k[recn].id[i]=data[j]; j++; } for(i=0;i<15;i++) { k[recn].first_name[i]=data[j]; j++; } for(i=0;i<15;i++) { k[recn].last_name[i]=data[j]; j++; } for(i=0;i<10;i++) { k[recn].phone[i]=data[j]; j++; } for(i=0;i<2;i++) { k[recn].grade[i]=data[j]; j++; } recn++; j=0; } //cout<<recn; string temp1; size_t temp2; int temp3; for(i=0;i<recn-1;i++) { for(j=0;j<recn-1;j++) { if(k[i].id.compare(k[j].id)<0) { temp1 = k[i].first_name; k[i].first_name = k[j].first_name; k[j].first_name = temp1; temp2 = k[i].first_len; k[i].first_len = k[j].first_len; k[j].first_len = temp2; temp1 = k[i].last_name; k[i].last_name = k[j].last_name; k[j].last_name = temp1; temp2 = k[i].last_len; k[i].last_len = k[j].last_len; k[j].last_len = temp2; temp1 = k[i].grade; k[i].grade = k[j].grade; k[j].grade = temp1; temp2 = k[i].grade_len; k[i].grade_len = k[j].grade_len; k[j].grade_len = temp2; temp1 = k[i].id; k[i].id = k[j].id; k[j].id = temp1; temp2 = k[i].id_len; k[i].id_len = k[j].id_len; k[j].id_len = temp2; temp1 = k[i].phone; k[i].phone = k[j].phone; k[j].phone = temp1; temp2 = k[i].phone_len; k[i].phone_len = k[j].phone_len; k[j].phone_len = temp2; } } } for(i=0;i<recn-1;i++) { k[i].clean(); } char z; string id_sear; cout<<"Enter 1 to display , 2 to search , 3 to exit:"; cin>>z; while(1){ switch(z) { case '1': for(i=0;i<recn-1;i++) { k[i].print(); } break; case '2': cin>>key; right=0; left=recn-2; while(right<=left) { middle=((right+left)/2); if(key.compare(k[middle].id)==0){ cout<<"Founded"<<endl; k[middle].print(); break; } else if(key.compare(k[middle].id)<0) { left=middle-1; } else { right=middle+1; } } break; case '3': exit(0); break; } cout<<"Enter 1 to display , 2 to search , 3 to exit:"; cin>>z; } return 0; } the program reads from a file example.txt 313121crewwe matt 0114323111A # 433444cristinaee john 0113344325A+# 324311matte richee 3040554032B # the idea is to read fixed size field structure with a text seprator record strucutre

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  • unmet dependencies in Ubuntu 12.04

    - by lee.O
    I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error): linux:~$ sudo apt-get install git Reading package lists... Done Building dependency tree Reading state information... Done git is already the newest version. You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: python-glade2:i386 : Depends: python:i386 (< 2.5) but it is not going to be installed Depends: python-support:i386 (= 0.3.4) but it is not installable Depends: python:i386 (= 2.4) but it is not going to be installed Depends: libglade2-0:i386 (= 1:2.5.1) but it is not going to be installed Depends: python-gtk2:i386 (= 2.8.6-8) but it is not going to be installed python-numeric:i386 : Depends: python:i386 (< 2.5) but it is not going to be installed Depends: python:i386 (= 2.3) but it is not going to be installed Depends: python-central:i386 (= 0.5.7) but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). well, i can read and tried the proposed command, but then i get this: linux:~$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: libopenal1:i386 libsdl-ttf2.0-0:i386 libkrb5-3:i386 libgconf-2-4:i386 libsm-dev libatk1.0-0:i386 libk5crypto3:i386 libstdc++5:i386 libqt4-declarative:i386 libxcomposite1:i386 libice-dev libgail18:i386 libldap-2.4-2:i386 libao-common libv4l-0:i386 liblcms1:i386 libqt4-qt3support:i386 libroken18-heimdal:i386 libunistring0:i386 libcupsimage2:i386 libgphoto2-port0:i386 libidn11:i386 libnss3:i386 libcaca0:i386 gtk2-engines:i386 libgudev-1.0-0:i386 libjpeg-turbo8:i386 libpthread-stubs0 libcairo-gobject2:i386 libavc1394-0:i386 libjpeg8:i386 libotr2 libaio1:i386 libsane:i386 odbcinst1debian2 odbcinst1debian2:i386 libqt4-test:i386 libqt4-script:i386 libqt4-designer:i386 libsdl-mixer1.2:i386 libqt4-network:i386 libqt4-dbus:i386 libcap2:i386 libproxy1:i386 ibus-gtk:i386 libdbus-glib-1-2:i386 libtdb1:i386 libasn1-8-heimdal:i386 libspeex1:i386 libxslt1.1:i386 libgomp1:i386 libcapi20-3:i386 libibus-1.0-0:i386 libcairo2:i386 libgnutls26:i386 libopenal-data odbcinst libgssapi3-heimdal:i386 libcanberra0:i386 libtasn1-3:i386 libfreetype6:i386 x11proto-kb-dev gtk2-engines-murrine:i386 libwavpack1:i386 libqt4-opengl:i386 libsoup-gnome2.4-1:i386 libv4lconvert0:i386 gstreamer0.10-plugins-good:i386 libc6-i386 lib32gcc1 libqt4-xmlpatterns:i386 librsvg2-common:i386 libdatrie1:i386 xtrans-dev libavahi-common-data:i386 libiec61883-0:i386 lib32asound2 libgdk-pixbuf2.0-0:i386 libsdl-image1.2:i386 libp11-kit0:i386 x11proto-input-dev libwind0-heimdal:i386 libpixman-1-0:i386 libsdl1.2debian:i386 libxaw7:i386 libgdbm3:i386 libcups2:i386 libcurl3:i386 libqtcore4:i386 libxinerama1:i386 libesd0:i386 libmikmod2:i386 libkrb5support0:i386 libxft2:i386 libxt-dev libcroco3:i386 libpulse-mainloop-glib0:i386 libice6:i386 libaa1:i386 libieee1284-3:i386 libgcrypt11:i386 libthai0:i386 libao4:i386 libkeyutils1:i386 libxmu6:i386 libcanberra-gtk0:i386 libvorbisfile3:i386 libqt4-sql:i386 esound-common libxpm4:i386 libqt4-svg:i386 libusb-0.1-4:i386 libgail-common:i386 libxrender1:i386 libhcrypto4-heimdal:i386 libraw1394-11:i386 libnspr4:i386 libshout3:i386 libdv4:i386 libhx509-5-heimdal:i386 libxau-dev libqt4-xml:i386 gstreamer0.10-x:i386 libgettextpo0:i386 libxss1:i386 libgd2-xpm:i386 libheimbase1-heimdal:i386 libtiff4:i386 libsdl-net1.2:i386 libjasper1:i386 libgnome-keyring0:i386 libxtst6:i386 gtk2-engines-pixbuf:i386 libqtgui4:i386 libtag1c2a:i386 librsvg2-2:i386 libavahi-client3:i386 libssl0.9.8:i386 libmpg123-0:i386 libmad0:i386 libsasl2-2:i386 xorg-sgml-doctools libgsoap1 gtk2-engines-oxygen:i386 libfontconfig1:i386 xaw3dg:i386 libpango1.0-0:i386 libsm6:i386 libx11-dev libheimntlm0-heimdal:i386 libpulsedsp:i386 lib32stdc++6 libx11-doc libqt4-sql-mysql:i386 libxcb-render0:i386 libodbc1:i386 libexif12:i386 libqt4-scripttools:i386 librtmp0:i386 libgssapi-krb5-2:i386 libxi6:i386 libqtwebkit4:i386 libxcb1-dev libxp6:i386 libaudio2:i386 libxcursor1:i386 libxcb-shm0:i386 libxt6:i386 libxv1:i386 libsasl2-modules:i386 libavahi-common3:i386 libxrandr2:i386 x11proto-core-dev libsqlite3-0:i386 libmng1:i386 libgtk2.0-0:i386 libxdmcp-dev libpthread-stubs0-dev libltdl7:i386 libkrb5-26-heimdal:i386 libssl1.0.0:i386 glib-networking:i386 libgpg-error0:i386 libsoup2.4-1:i386 libgphoto2-2:i386 libtag1-vanilla:i386 libaudiofile1:i386 libglade2-0:i386 Use 'apt-get autoremove' to remove them. The following extra packages will be installed: default-jre default-jre-headless icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-netx icedtea-netx-common libglade2-0:i386 libpython3.2 openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib python3 python3-minimal python3-uno python3.2 python3.2-minimal Suggested packages: icedtea-plugin sun-java6-fonts fonts-ipafont-gothic fonts-ipafont-mincho ttf-telugu-fonts ttf-oriya-fonts ttf-kannada-fonts ttf-bengali-fonts python3-doc python3-tk python3.2-doc binfmt-support The following packages will be REMOVED: activity-log-manager-control-center aisleriot alacarte apparmor apport apport-gtk apt-xapian-index aptdaemon apturl apturl-common bluez bluez-alsa bluez-alsa:i386 bluez-gstreamer checkbox checkbox-qt command-not-found compiz compiz-gnome compiz-plugins-main-default compizconfig-backend-gconf deja-dup duplicity eog evolution-data-server firefox firefox-globalmenu firefox-gnome-support foomatic-db-compressed-ppds gconf-editor gconf2 gdb gedit gir1.2-mutter-3.0 gir1.2-peas-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-ubuntuoneui-3.0 gksu gnome-applets gnome-applets-data gnome-bluetooth gnome-contacts gnome-control-center gnome-media gnome-menus gnome-orca gnome-panel gnome-panel-data gnome-session-fallback gnome-shell gnome-sudoku gnome-terminal gnome-terminal-data gnome-themes-standard gnome-tweak-tool gnome-user-share gstreamer0.10-gconf gwibber gwibber-service gwibber-service-facebook gwibber-service-identica gwibber-service-twitter hplip hplip-data ia32-libs ia32-libs-multiarch:i386 ibus ibus-pinyin ibus-table indicator-datetime indicator-power jockey-common jockey-gtk landscape-client-ui-install language-selector-common language-selector-gnome launchpad-integration libcanberra-gtk-module libcanberra-gtk-module:i386 libcanberra-gtk3-module libcompizconfig0 libfolks-eds25 libgksu2-0 libgnome-media-profiles-3.0-0 libgnome2-0 libgnome2-common libgnomevfs2-0 libgnomevfs2-common libgweather-3-0 libgweather-common libgwibber-gtk2 libgwibber2 libmetacity-private0 libmutter0 libpeas-1.0-0 libpurple-bin libpython2.7 libreoffice-gnome librhythmbox-core5 libsyncdaemon-1.0-1 libtotem0 libubuntuoneui-3.0-1 light-themes lsb-release metacity metacity-common mutter-common nautilus-dropbox nautilus-share network-manager-gnome nvidia-common nvidia-settings nvidia-settings-updates onboard oneconf openjdk-7-jdk openjdk-7-jre openprinting-ppds pidgin pidgin-libnotify pidgin-otr printer-driver-foo2zjs printer-driver-ptouch printer-driver-pxljr printer-driver-sag-gdi printer-driver-splix python python-appindicator python-apport python-apt python-apt-common python-aptdaemon python-aptdaemon.gtk3widgets python-aptdaemon.pkcompat python-brlapi python-cairo python-central python-chardet python-configglue python-crypto python-cups python-cupshelpers python-dateutil python-dbus python-debian python-debtagshw python-defer python-dirspec python-egenix-mxdatetime python-egenix-mxtools python-gconf python-gdbm python-gi python-gi-cairo python-glade2:i386 python-gmenu python-gnomekeyring python-gnupginterface python-gobject python-gobject-2 python-gpgme python-gst0.10 python-gtk2 python-httplib2 python-ibus python-imaging python-keyring python-launchpadlib python-lazr.restfulclient python-lazr.uri python-libproxy python-libxml2 python-louis python-mako python-markupsafe python-minimal python-notify python-numeric:i386 python-oauth python-openssl python-packagekit python-pam python-pexpect python-piston-mini-client python-pkg-resources python-problem-report python-protobuf python-pyatspi2 python-pycurl python-pyinotify python-renderpm python-reportlab python-reportlab-accel python-serial python-simplejson python-smbc python-software-properties python-speechd python-twisted-bin python-twisted-core python-twisted-names python-twisted-web python-ubuntu-sso-client python-ubuntuone-client python-ubuntuone-control-panel python-ubuntuone-storageprotocol python-uno python-virtkey python-wadllib python-xapian python-xdg python-xkit python-zeitgeist python-zope.interface python2.7 python2.7-minimal rhythmbox rhythmbox-mozilla rhythmbox-plugin-cdrecorder rhythmbox-plugin-magnatune rhythmbox-plugin-zeitgeist rhythmbox-plugins rhythmbox-ubuntuone screen-resolution-extra sessioninstaller skype software-center software-center-aptdaemon-plugins software-properties-common software-properties-gtk system-config-printer-common system-config-printer-gnome system-config-printer-udev texlive-extra-utils totem totem-mozilla totem-plugins ubuntu-artwork ubuntu-desktop ubuntu-minimal ubuntu-sso-client ubuntu-sso-client-gtk ubuntu-standard ubuntu-system-service ubuntuone-client ubuntuone-client-gnome ubuntuone-control-panel ubuntuone-couch ubuntuone-installer ufw unattended-upgrades unity unity-2d unity-common unity-lens-applications unity-lens-video unity-scope-musicstores unity-scope-video-remote update-manager update-manager-core update-notifier update-notifier-common usb-creator-common usb-creator-gtk virtualbox virtualbox-dkms virtualbox-qt xdiagnose xul-ext-ubufox zeitgeist zeitgeist-core zeitgeist-datahub The following NEW packages will be installed: default-jre default-jre-headless icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-netx icedtea-netx-common libglade2-0:i386 libpython3.2 openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib python3 python3-minimal python3-uno python3.2 python3.2-minimal WARNING: The following essential packages will be removed. This should NOT be done unless you know exactly what you are doing! python-minimal python2.7-minimal (due to python-minimal) 0 upgraded, 16 newly installed, 273 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 39.1 MB of archives. After this operation, 324 MB disk space will be freed. You are about to do something potentially harmful. To continue type in the phrase 'Yes, do as I say!' ?] Thats not good, is it?! Should i run this command or should i run another command to fix this problem? Would be great if somebody can help me. :) Thanks in advance. best regards

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  • Zen and the Art of File and Folder Organization

    - by Mark Virtue
    Is your desk a paragon of neatness, or does it look like a paper-bomb has gone off? If you’ve been putting off getting organized because the task is too huge or daunting, or you don’t know where to start, we’ve got 40 tips to get you on the path to zen mastery of your filing system. For all those readers who would like to get their files and folders organized, or, if they’re already organized, better organized—we have compiled a complete guide to getting organized and staying organized, a comprehensive article that will hopefully cover every possible tip you could want. Signs that Your Computer is Poorly Organized If your computer is a mess, you’re probably already aware of it.  But just in case you’re not, here are some tell-tale signs: Your Desktop has over 40 icons on it “My Documents” contains over 300 files and 60 folders, including MP3s and digital photos You use the Windows’ built-in search facility whenever you need to find a file You can’t find programs in the out-of-control list of programs in your Start Menu You save all your Word documents in one folder, all your spreadsheets in a second folder, etc Any given file that you’re looking for may be in any one of four different sets of folders But before we start, here are some quick notes: We’re going to assume you know what files and folders are, and how to create, save, rename, copy and delete them The organization principles described in this article apply equally to all computer systems.  However, the screenshots here will reflect how things look on Windows (usually Windows 7).  We will also mention some useful features of Windows that can help you get organized. Everyone has their own favorite methodology of organizing and filing, and it’s all too easy to get into “My Way is Better than Your Way” arguments.  The reality is that there is no perfect way of getting things organized.  When I wrote this article, I tried to keep a generalist and objective viewpoint.  I consider myself to be unusually well organized (to the point of obsession, truth be told), and I’ve had 25 years experience in collecting and organizing files on computers.  So I’ve got a lot to say on the subject.  But the tips I have described here are only one way of doing it.  Hopefully some of these tips will work for you too, but please don’t read this as any sort of “right” way to do it. At the end of the article we’ll be asking you, the reader, for your own organization tips. Why Bother Organizing At All? For some, the answer to this question is self-evident. And yet, in this era of powerful desktop search software (the search capabilities built into the Windows Vista and Windows 7 Start Menus, and third-party programs like Google Desktop Search), the question does need to be asked, and answered. I have a friend who puts every file he ever creates, receives or downloads into his My Documents folder and doesn’t bother filing them into subfolders at all.  He relies on the search functionality built into his Windows operating system to help him find whatever he’s looking for.  And he always finds it.  He’s a Search Samurai.  For him, filing is a waste of valuable time that could be spent enjoying life! It’s tempting to follow suit.  On the face of it, why would anyone bother to take the time to organize their hard disk when such excellent search software is available?  Well, if all you ever want to do with the files you own is to locate and open them individually (for listening, editing, etc), then there’s no reason to ever bother doing one scrap of organization.  But consider these common tasks that are not achievable with desktop search software: Find files manually.  Often it’s not convenient, speedy or even possible to utilize your desktop search software to find what you want.  It doesn’t work 100% of the time, or you may not even have it installed.  Sometimes its just plain faster to go straight to the file you want, if you know it’s in a particular sub-folder, rather than trawling through hundreds of search results. Find groups of similar files (e.g. all your “work” files, all the photos of your Europe holiday in 2008, all your music videos, all the MP3s from Dark Side of the Moon, all your letters you wrote to your wife, all your tax returns).  Clever naming of the files will only get you so far.  Sometimes it’s the date the file was created that’s important, other times it’s the file format, and other times it’s the purpose of the file.  How do you name a collection of files so that they’re easy to isolate based on any of the above criteria?  Short answer, you can’t. Move files to a new computer.  It’s time to upgrade your computer.  How do you quickly grab all the files that are important to you?  Or you decide to have two computers now – one for home and one for work.  How do you quickly isolate only the work-related files to move them to the work computer? Synchronize files to other computers.  If you have more than one computer, and you need to mirror some of your files onto the other computer (e.g. your music collection), then you need a way to quickly determine which files are to be synced and which are not.  Surely you don’t want to synchronize everything? Choose which files to back up.  If your backup regime calls for multiple backups, or requires speedy backups, then you’ll need to be able to specify which files are to be backed up, and which are not.  This is not possible if they’re all in the same folder. Finally, if you’re simply someone who takes pleasure in being organized, tidy and ordered (me! me!), then you don’t even need a reason.  Being disorganized is simply unthinkable. Tips on Getting Organized Here we present our 40 best tips on how to get organized.  Or, if you’re already organized, to get better organized. Tip #1.  Choose Your Organization System Carefully The reason that most people are not organized is that it takes time.  And the first thing that takes time is deciding upon a system of organization.  This is always a matter of personal preference, and is not something that a geek on a website can tell you.  You should always choose your own system, based on how your own brain is organized (which makes the assumption that your brain is, in fact, organized). We can’t instruct you, but we can make suggestions: You may want to start off with a system based on the users of the computer.  i.e. “My Files”, “My Wife’s Files”, My Son’s Files”, etc.  Inside “My Files”, you might then break it down into “Personal” and “Business”.  You may then realize that there are overlaps.  For example, everyone may want to share access to the music library, or the photos from the school play.  So you may create another folder called “Family”, for the “common” files. You may decide that the highest-level breakdown of your files is based on the “source” of each file.  In other words, who created the files.  You could have “Files created by ME (business or personal)”, “Files created by people I know (family, friends, etc)”, and finally “Files created by the rest of the world (MP3 music files, downloaded or ripped movies or TV shows, software installation files, gorgeous desktop wallpaper images you’ve collected, etc).”  This system happens to be the one I use myself.  See below:  Mark is for files created by meVC is for files created by my company (Virtual Creations)Others is for files created by my friends and familyData is the rest of the worldAlso, Settings is where I store the configuration files and other program data files for my installed software (more on this in tip #34, below). Each folder will present its own particular set of requirements for further sub-organization.  For example, you may decide to organize your music collection into sub-folders based on the artist’s name, while your digital photos might get organized based on the date they were taken.  It can be different for every sub-folder! Another strategy would be based on “currentness”.  Files you have yet to open and look at live in one folder.  Ones that have been looked at but not yet filed live in another place.  Current, active projects live in yet another place.  All other files (your “archive”, if you like) would live in a fourth folder. (And of course, within that last folder you’d need to create a further sub-system based on one of the previous bullet points). Put some thought into this – changing it when it proves incomplete can be a big hassle!  Before you go to the trouble of implementing any system you come up with, examine a wide cross-section of the files you own and see if they will all be able to find a nice logical place to sit within your system. Tip #2.  When You Decide on Your System, Stick to It! There’s nothing more pointless than going to all the trouble of creating a system and filing all your files, and then whenever you create, receive or download a new file, you simply dump it onto your Desktop.  You need to be disciplined – forever!  Every new file you get, spend those extra few seconds to file it where it belongs!  Otherwise, in just a month or two, you’ll be worse off than before – half your files will be organized and half will be disorganized – and you won’t know which is which! Tip #3.  Choose the Root Folder of Your Structure Carefully Every data file (document, photo, music file, etc) that you create, own or is important to you, no matter where it came from, should be found within one single folder, and that one single folder should be located at the root of your C: drive (as a sub-folder of C:\).  In other words, do not base your folder structure in standard folders like “My Documents”.  If you do, then you’re leaving it up to the operating system engineers to decide what folder structure is best for you.  And every operating system has a different system!  In Windows 7 your files are found in C:\Users\YourName, whilst on Windows XP it was C:\Documents and Settings\YourName\My Documents.  In UNIX systems it’s often /home/YourName. These standard default folders tend to fill up with junk files and folders that are not at all important to you.  “My Documents” is the worst offender.  Every second piece of software you install, it seems, likes to create its own folder in the “My Documents” folder.  These folders usually don’t fit within your organizational structure, so don’t use them!  In fact, don’t even use the “My Documents” folder at all.  Allow it to fill up with junk, and then simply ignore it.  It sounds heretical, but: Don’t ever visit your “My Documents” folder!  Remove your icons/links to “My Documents” and replace them with links to the folders you created and you care about! Create your own file system from scratch!  Probably the best place to put it would be on your D: drive – if you have one.  This way, all your files live on one drive, while all the operating system and software component files live on the C: drive – simply and elegantly separated.  The benefits of that are profound.  Not only are there obvious organizational benefits (see tip #10, below), but when it comes to migrate your data to a new computer, you can (sometimes) simply unplug your D: drive and plug it in as the D: drive of your new computer (this implies that the D: drive is actually a separate physical disk, and not a partition on the same disk as C:).  You also get a slight speed improvement (again, only if your C: and D: drives are on separate physical disks). Warning:  From tip #12, below, you will see that it’s actually a good idea to have exactly the same file system structure – including the drive it’s filed on – on all of the computers you own.  So if you decide to use the D: drive as the storage system for your own files, make sure you are able to use the D: drive on all the computers you own.  If you can’t ensure that, then you can still use a clever geeky trick to store your files on the D: drive, but still access them all via the C: drive (see tip #17, below). If you only have one hard disk (C:), then create a dedicated folder that will contain all your files – something like C:\Files.  The name of the folder is not important, but make it a single, brief word. There are several reasons for this: When creating a backup regime, it’s easy to decide what files should be backed up – they’re all in the one folder! If you ever decide to trade in your computer for a new one, you know exactly which files to migrate You will always know where to begin a search for any file If you synchronize files with other computers, it makes your synchronization routines very simple.   It also causes all your shortcuts to continue to work on the other machines (more about this in tip #24, below). Once you’ve decided where your files should go, then put all your files in there – Everything!  Completely disregard the standard, default folders that are created for you by the operating system (“My Music”, “My Pictures”, etc).  In fact, you can actually relocate many of those folders into your own structure (more about that below, in tip #6). The more completely you get all your data files (documents, photos, music, etc) and all your configuration settings into that one folder, then the easier it will be to perform all of the above tasks. Once this has been done, and all your files live in one folder, all the other folders in C:\ can be thought of as “operating system” folders, and therefore of little day-to-day interest for us. Here’s a screenshot of a nicely organized C: drive, where all user files are located within the \Files folder:   Tip #4.  Use Sub-Folders This would be our simplest and most obvious tip.  It almost goes without saying.  Any organizational system you decide upon (see tip #1) will require that you create sub-folders for your files.  Get used to creating folders on a regular basis. Tip #5.  Don’t be Shy About Depth Create as many levels of sub-folders as you need.  Don’t be scared to do so.  Every time you notice an opportunity to group a set of related files into a sub-folder, do so.  Examples might include:  All the MP3s from one music CD, all the photos from one holiday, or all the documents from one client. It’s perfectly okay to put files into a folder called C:\Files\Me\From Others\Services\WestCo Bank\Statements\2009.  That’s only seven levels deep.  Ten levels is not uncommon.  Of course, it’s possible to take this too far.  If you notice yourself creating a sub-folder to hold only one file, then you’ve probably become a little over-zealous.  On the other hand, if you simply create a structure with only two levels (for example C:\Files\Work) then you really haven’t achieved any level of organization at all (unless you own only six files!).  Your “Work” folder will have become a dumping ground, just like your Desktop was, with most likely hundreds of files in it. Tip #6.  Move the Standard User Folders into Your Own Folder Structure Most operating systems, including Windows, create a set of standard folders for each of its users.  These folders then become the default location for files such as documents, music files, digital photos and downloaded Internet files.  In Windows 7, the full list is shown below: Some of these folders you may never use nor care about (for example, the Favorites folder, if you’re not using Internet Explorer as your browser).  Those ones you can leave where they are.  But you may be using some of the other folders to store files that are important to you.  Even if you’re not using them, Windows will still often treat them as the default storage location for many types of files.  When you go to save a standard file type, it can become annoying to be automatically prompted to save it in a folder that’s not part of your own file structure. But there’s a simple solution:  Move the folders you care about into your own folder structure!  If you do, then the next time you go to save a file of the corresponding type, Windows will prompt you to save it in the new, moved location. Moving the folders is easy.  Simply drag-and-drop them to the new location.  Here’s a screenshot of the default My Music folder being moved to my custom personal folder (Mark): Tip #7.  Name Files and Folders Intelligently This is another one that almost goes without saying, but we’ll say it anyway:  Do not allow files to be created that have meaningless names like Document1.doc, or folders called New Folder (2).  Take that extra 20 seconds and come up with a meaningful name for the file/folder – one that accurately divulges its contents without repeating the entire contents in the name. Tip #8.  Watch Out for Long Filenames Another way to tell if you have not yet created enough depth to your folder hierarchy is that your files often require really long names.  If you need to call a file Johnson Sales Figures March 2009.xls (which might happen to live in the same folder as Abercrombie Budget Report 2008.xls), then you might want to create some sub-folders so that the first file could be simply called March.xls, and living in the Clients\Johnson\Sales Figures\2009 folder. A well-placed file needs only a brief filename! Tip #9.  Use Shortcuts!  Everywhere! This is probably the single most useful and important tip we can offer.  A shortcut allows a file to be in two places at once. Why would you want that?  Well, the file and folder structure of every popular operating system on the market today is hierarchical.  This means that all objects (files and folders) always live within exactly one parent folder.  It’s a bit like a tree.  A tree has branches (folders) and leaves (files).  Each leaf, and each branch, is supported by exactly one parent branch, all the way back to the root of the tree (which, incidentally, is exactly why C:\ is called the “root folder” of the C: drive). That hard disks are structured this way may seem obvious and even necessary, but it’s only one way of organizing data.  There are others:  Relational databases, for example, organize structured data entirely differently.  The main limitation of hierarchical filing structures is that a file can only ever be in one branch of the tree – in only one folder – at a time.  Why is this a problem?  Well, there are two main reasons why this limitation is a problem for computer users: The “correct” place for a file, according to our organizational rationale, is very often a very inconvenient place for that file to be located.  Just because it’s correctly filed doesn’t mean it’s easy to get to.  Your file may be “correctly” buried six levels deep in your sub-folder structure, but you may need regular and speedy access to this file every day.  You could always move it to a more convenient location, but that would mean that you would need to re-file back to its “correct” location it every time you’d finished working on it.  Most unsatisfactory. A file may simply “belong” in two or more different locations within your file structure.  For example, say you’re an accountant and you have just completed the 2009 tax return for John Smith.  It might make sense to you to call this file 2009 Tax Return.doc and file it under Clients\John Smith.  But it may also be important to you to have the 2009 tax returns from all your clients together in the one place.  So you might also want to call the file John Smith.doc and file it under Tax Returns\2009.  The problem is, in a purely hierarchical filing system, you can’t put it in both places.  Grrrrr! Fortunately, Windows (and most other operating systems) offers a way for you to do exactly that:  It’s called a “shortcut” (also known as an “alias” on Macs and a “symbolic link” on UNIX systems).  Shortcuts allow a file to exist in one place, and an icon that represents the file to be created and put anywhere else you please.  In fact, you can create a dozen such icons and scatter them all over your hard disk.  Double-clicking on one of these icons/shortcuts opens up the original file, just as if you had double-clicked on the original file itself. Consider the following two icons: The one on the left is the actual Word document, while the one on the right is a shortcut that represents the Word document.  Double-clicking on either icon will open the same file.  There are two main visual differences between the icons: The shortcut will have a small arrow in the lower-left-hand corner (on Windows, anyway) The shortcut is allowed to have a name that does not include the file extension (the “.docx” part, in this case) You can delete the shortcut at any time without losing any actual data.  The original is still intact.  All you lose is the ability to get to that data from wherever the shortcut was. So why are shortcuts so great?  Because they allow us to easily overcome the main limitation of hierarchical file systems, and put a file in two (or more) places at the same time.  You will always have files that don’t play nice with your organizational rationale, and can’t be filed in only one place.  They demand to exist in two places.  Shortcuts allow this!  Furthermore, they allow you to collect your most often-opened files and folders together in one spot for convenient access.  The cool part is that the original files stay where they are, safe forever in their perfectly organized location. So your collection of most often-opened files can – and should – become a collection of shortcuts! If you’re still not convinced of the utility of shortcuts, consider the following well-known areas of a typical Windows computer: The Start Menu (and all the programs that live within it) The Quick Launch bar (or the Superbar in Windows 7) The “Favorite folders” area in the top-left corner of the Windows Explorer window (in Windows Vista or Windows 7) Your Internet Explorer Favorites or Firefox Bookmarks Each item in each of these areas is a shortcut!  Each of those areas exist for one purpose only:  For convenience – to provide you with a collection of the files and folders you access most often. It should be easy to see by now that shortcuts are designed for one single purpose:  To make accessing your files more convenient.  Each time you double-click on a shortcut, you are saved the hassle of locating the file (or folder, or program, or drive, or control panel icon) that it represents. Shortcuts allow us to invent a golden rule of file and folder organization: “Only ever have one copy of a file – never have two copies of the same file.  Use a shortcut instead” (this rule doesn’t apply to copies created for backup purposes, of course!) There are also lesser rules, like “don’t move a file into your work area – create a shortcut there instead”, and “any time you find yourself frustrated with how long it takes to locate a file, create a shortcut to it and place that shortcut in a convenient location.” So how to we create these massively useful shortcuts?  There are two main ways: “Copy” the original file or folder (click on it and type Ctrl-C, or right-click on it and select Copy):  Then right-click in an empty area of the destination folder (the place where you want the shortcut to go) and select Paste shortcut: Right-drag (drag with the right mouse button) the file from the source folder to the destination folder.  When you let go of the mouse button at the destination folder, a menu pops up: Select Create shortcuts here. Note that when shortcuts are created, they are often named something like Shortcut to Budget Detail.doc (windows XP) or Budget Detail – Shortcut.doc (Windows 7).   If you don’t like those extra words, you can easily rename the shortcuts after they’re created, or you can configure Windows to never insert the extra words in the first place (see our article on how to do this). And of course, you can create shortcuts to folders too, not just to files! Bottom line: Whenever you have a file that you’d like to access from somewhere else (whether it’s convenience you’re after, or because the file simply belongs in two places), create a shortcut to the original file in the new location. Tip #10.  Separate Application Files from Data Files Any digital organization guru will drum this rule into you.  Application files are the components of the software you’ve installed (e.g. Microsoft Word, Adobe Photoshop or Internet Explorer).  Data files are the files that you’ve created for yourself using that software (e.g. Word Documents, digital photos, emails or playlists). Software gets installed, uninstalled and upgraded all the time.  Hopefully you always have the original installation media (or downloaded set-up file) kept somewhere safe, and can thus reinstall your software at any time.  This means that the software component files are of little importance.  Whereas the files you have created with that software is, by definition, important.  It’s a good rule to always separate unimportant files from important files. So when your software prompts you to save a file you’ve just created, take a moment and check out where it’s suggesting that you save the file.  If it’s suggesting that you save the file into the same folder as the software itself, then definitely don’t follow that suggestion.  File it in your own folder!  In fact, see if you can find the program’s configuration option that determines where files are saved by default (if it has one), and change it. Tip #11.  Organize Files Based on Purpose, Not on File Type If you have, for example a folder called Work\Clients\Johnson, and within that folder you have two sub-folders, Word Documents and Spreadsheets (in other words, you’re separating “.doc” files from “.xls” files), then chances are that you’re not optimally organized.  It makes little sense to organize your files based on the program that created them.  Instead, create your sub-folders based on the purpose of the file.  For example, it would make more sense to create sub-folders called Correspondence and Financials.  It may well be that all the files in a given sub-folder are of the same file-type, but this should be more of a coincidence and less of a design feature of your organization system. Tip #12.  Maintain the Same Folder Structure on All Your Computers In other words, whatever organizational system you create, apply it to every computer that you can.  There are several benefits to this: There’s less to remember.  No matter where you are, you always know where to look for your files If you copy or synchronize files from one computer to another, then setting up the synchronization job becomes very simple Shortcuts can be copied or moved from one computer to another with ease (assuming the original files are also copied/moved).  There’s no need to find the target of the shortcut all over again on the second computer Ditto for linked files (e.g Word documents that link to data in a separate Excel file), playlists, and any files that reference the exact file locations of other files. This applies even to the drive that your files are stored on.  If your files are stored on C: on one computer, make sure they’re stored on C: on all your computers.  Otherwise all your shortcuts, playlists and linked files will stop working! Tip #13.  Create an “Inbox” Folder Create yourself a folder where you store all files that you’re currently working on, or that you haven’t gotten around to filing yet.  You can think of this folder as your “to-do” list.  You can call it “Inbox” (making it the same metaphor as your email system), or “Work”, or “To-Do”, or “Scratch”, or whatever name makes sense to you.  It doesn’t matter what you call it – just make sure you have one! Once you have finished working on a file, you then move it from the “Inbox” to its correct location within your organizational structure. You may want to use your Desktop as this “Inbox” folder.  Rightly or wrongly, most people do.  It’s not a bad place to put such files, but be careful:  If you do decide that your Desktop represents your “to-do” list, then make sure that no other files find their way there.  In other words, make sure that your “Inbox”, wherever it is, Desktop or otherwise, is kept free of junk – stray files that don’t belong there. So where should you put this folder, which, almost by definition, lives outside the structure of the rest of your filing system?  Well, first and foremost, it has to be somewhere handy.  This will be one of your most-visited folders, so convenience is key.  Putting it on the Desktop is a great option – especially if you don’t have any other folders on your Desktop:  the folder then becomes supremely easy to find in Windows Explorer: You would then create shortcuts to this folder in convenient spots all over your computer (“Favorite Links”, “Quick Launch”, etc). Tip #14.  Ensure You have Only One “Inbox” Folder Once you’ve created your “Inbox” folder, don’t use any other folder location as your “to-do list”.  Throw every incoming or created file into the Inbox folder as you create/receive it.  This keeps the rest of your computer pristine and free of randomly created or downloaded junk.  The last thing you want to be doing is checking multiple folders to see all your current tasks and projects.  Gather them all together into one folder. Here are some tips to help ensure you only have one Inbox: Set the default “save” location of all your programs to this folder. Set the default “download” location for your browser to this folder. If this folder is not your desktop (recommended) then also see if you can make a point of not putting “to-do” files on your desktop.  This keeps your desktop uncluttered and Zen-like: (the Inbox folder is in the bottom-right corner) Tip #15.  Be Vigilant about Clearing Your “Inbox” Folder This is one of the keys to staying organized.  If you let your “Inbox” overflow (i.e. allow there to be more than, say, 30 files or folders in there), then you’re probably going to start feeling like you’re overwhelmed:  You’re not keeping up with your to-do list.  Once your Inbox gets beyond a certain point (around 30 files, studies have shown), then you’ll simply start to avoid it.  You may continue to put files in there, but you’ll be scared to look at it, fearing the “out of control” feeling that all overworked, chaotic or just plain disorganized people regularly feel. So, here’s what you can do: Visit your Inbox/to-do folder regularly (at least five times per day). Scan the folder regularly for files that you have completed working on and are ready for filing.  File them immediately. Make it a source of pride to keep the number of files in this folder as small as possible.  If you value peace of mind, then make the emptiness of this folder one of your highest (computer) priorities If you know that a particular file has been in the folder for more than, say, six weeks, then admit that you’re not actually going to get around to processing it, and move it to its final resting place. Tip #16.  File Everything Immediately, and Use Shortcuts for Your Active Projects As soon as you create, receive or download a new file, store it away in its “correct” folder immediately.  Then, whenever you need to work on it (possibly straight away), create a shortcut to it in your “Inbox” (“to-do”) folder or your desktop.  That way, all your files are always in their “correct” locations, yet you still have immediate, convenient access to your current, active files.  When you finish working on a file, simply delete the shortcut. Ideally, your “Inbox” folder – and your Desktop – should contain no actual files or folders.  They should simply contain shortcuts. Tip #17.  Use Directory Symbolic Links (or Junctions) to Maintain One Unified Folder Structure Using this tip, we can get around a potential hiccup that we can run into when creating our organizational structure – the issue of having more than one drive on our computer (C:, D:, etc).  We might have files we need to store on the D: drive for space reasons, and yet want to base our organized folder structure on the C: drive (or vice-versa). Your chosen organizational structure may dictate that all your files must be accessed from the C: drive (for example, the root folder of all your files may be something like C:\Files).  And yet you may still have a D: drive and wish to take advantage of the hundreds of spare Gigabytes that it offers.  Did you know that it’s actually possible to store your files on the D: drive and yet access them as if they were on the C: drive?  And no, we’re not talking about shortcuts here (although the concept is very similar). By using the shell command mklink, you can essentially take a folder that lives on one drive and create an alias for it on a different drive (you can do lots more than that with mklink – for a full rundown on this programs capabilities, see our dedicated article).  These aliases are called directory symbolic links (and used to be known as junctions).  You can think of them as “virtual” folders.  They function exactly like regular folders, except they’re physically located somewhere else. For example, you may decide that your entire D: drive contains your complete organizational file structure, but that you need to reference all those files as if they were on the C: drive, under C:\Files.  If that was the case you could create C:\Files as a directory symbolic link – a link to D:, as follows: mklink /d c:\files d:\ Or it may be that the only files you wish to store on the D: drive are your movie collection.  You could locate all your movie files in the root of your D: drive, and then link it to C:\Files\Media\Movies, as follows: mklink /d c:\files\media\movies d:\ (Needless to say, you must run these commands from a command prompt – click the Start button, type cmd and press Enter) Tip #18. Customize Your Folder Icons This is not strictly speaking an organizational tip, but having unique icons for each folder does allow you to more quickly visually identify which folder is which, and thus saves you time when you’re finding files.  An example is below (from my folder that contains all files downloaded from the Internet): To learn how to change your folder icons, please refer to our dedicated article on the subject. Tip #19.  Tidy Your Start Menu The Windows Start Menu is usually one of the messiest parts of any Windows computer.  Every program you install seems to adopt a completely different approach to placing icons in this menu.  Some simply put a single program icon.  Others create a folder based on the name of the software.  And others create a folder based on the name of the software manufacturer.  It’s chaos, and can make it hard to find the software you want to run. Thankfully we can avoid this chaos with useful operating system features like Quick Launch, the Superbar or pinned start menu items. Even so, it would make a lot of sense to get into the guts of the Start Menu itself and give it a good once-over.  All you really need to decide is how you’re going to organize your applications.  A structure based on the purpose of the application is an obvious candidate.  Below is an example of one such structure: In this structure, Utilities means software whose job it is to keep the computer itself running smoothly (configuration tools, backup software, Zip programs, etc).  Applications refers to any productivity software that doesn’t fit under the headings Multimedia, Graphics, Internet, etc. In case you’re not aware, every icon in your Start Menu is a shortcut and can be manipulated like any other shortcut (copied, moved, deleted, etc). With the Windows Start Menu (all version of Windows), Microsoft has decided that there be two parallel folder structures to store your Start Menu shortcuts.  One for you (the logged-in user of the computer) and one for all users of the computer.  Having two parallel structures can often be redundant:  If you are the only user of the computer, then having two parallel structures is totally redundant.  Even if you have several users that regularly log into the computer, most of your installed software will need to be made available to all users, and should thus be moved out of the “just you” version of the Start Menu and into the “all users” area. To take control of your Start Menu, so you can start organizing it, you’ll need to know how to access the actual folders and shortcut files that make up the Start Menu (both versions of it).  To find these folders and files, click the Start button and then right-click on the All Programs text (Windows XP users should right-click on the Start button itself): The Open option refers to the “just you” version of the Start Menu, while the Open All Users option refers to the “all users” version.  Click on the one you want to organize. A Windows Explorer window then opens with your chosen version of the Start Menu selected.  From there it’s easy.  Double-click on the Programs folder and you’ll see all your folders and shortcuts.  Now you can delete/rename/move until it’s just the way you want it. Note:  When you’re reorganizing your Start Menu, you may want to have two Explorer windows open at the same time – one showing the “just you” version and one showing the “all users” version.  You can drag-and-drop between the windows. Tip #20.  Keep Your Start Menu Tidy Once you have a perfectly organized Start Menu, try to be a little vigilant about keeping it that way.  Every time you install a new piece of software, the icons that get created will almost certainly violate your organizational structure. So to keep your Start Menu pristine and organized, make sure you do the following whenever you install a new piece of software: Check whether the software was installed into the “just you” area of the Start Menu, or the “all users” area, and then move it to the correct area. Remove all the unnecessary icons (like the “Read me” icon, the “Help” icon (you can always open the help from within the software itself when it’s running), the “Uninstall” icon, the link(s)to the manufacturer’s website, etc) Rename the main icon(s) of the software to something brief that makes sense to you.  For example, you might like to rename Microsoft Office Word 2010 to simply Word Move the icon(s) into the correct folder based on your Start Menu organizational structure And don’t forget:  when you uninstall a piece of software, the software’s uninstall routine is no longer going to be able to remove the software’s icon from the Start Menu (because you moved and/or renamed it), so you’ll need to remove that icon manually. Tip #21.  Tidy C:\ The root of your C: drive (C:\) is a common dumping ground for files and folders – both by the users of your computer and by the software that you install on your computer.  It can become a mess. There’s almost no software these days that requires itself to be installed in C:\.  99% of the time it can and should be installed into C:\Program Files.  And as for your own files, well, it’s clear that they can (and almost always should) be stored somewhere else. In an ideal world, your C:\ folder should look like this (on Windows 7): Note that there are some system files and folders in C:\ that are usually and deliberately “hidden” (such as the Windows virtual memory file pagefile.sys, the boot loader file bootmgr, and the System Volume Information folder).  Hiding these files and folders is a good idea, as they need to stay where they are and are almost never needed to be opened or even seen by you, the user.  Hiding them prevents you from accidentally messing with them, and enhances your sense of order and well-being when you look at your C: drive folder. Tip #22.  Tidy Your Desktop The Desktop is probably the most abused part of a Windows computer (from an organization point of view).  It usually serves as a dumping ground for all incoming files, as well as holding icons to oft-used applications, plus some regularly opened files and folders.  It often ends up becoming an uncontrolled mess.  See if you can avoid this.  Here’s why… Application icons (Word, Internet Explorer, etc) are often found on the Desktop, but it’s unlikely that this is the optimum place for them.  The “Quick Launch” bar (or the Superbar in Windows 7) is always visible and so represents a perfect location to put your icons.  You’ll only be able to see the icons on your Desktop when all your programs are minimized.  It might be time to get your application icons off your desktop… You may have decided that the Inbox/To-do folder on your computer (see tip #13, above) should be your Desktop.  If so, then enough said.  Simply be vigilant about clearing it and preventing it from being polluted by junk files (see tip #15, above).  On the other hand, if your Desktop is not acting as your “Inbox” folder, then there’s no reason for it to have any data files or folders on it at all, except perhaps a couple of shortcuts to often-opened files and folders (either ongoing or current projects).  Everything else should be moved to your “Inbox” folder. In an ideal world, it might look like this: Tip #23.  Move Permanent Items on Your Desktop Away from the Top-Left Corner When files/folders are dragged onto your desktop in a Windows Explorer window, or when shortcuts are created on your Desktop from Internet Explorer, those icons are always placed in the top-left corner – or as close as they can get.  If you have other files, folders or shortcuts that you keep on the Desktop permanently, then it’s a good idea to separate these permanent icons from the transient ones, so that you can quickly identify which ones the transients are.  An easy way to do this is to move all your permanent icons to the right-hand side of your Desktop.  That should keep them separated from incoming items. Tip #24.  Synchronize If you have more than one computer, you’ll almost certainly want to share files between them.  If the computers are permanently attached to the same local network, then there’s no need to store multiple copies of any one file or folder – shortcuts will suffice.  However, if the computers are not always on the same network, then you will at some point need to copy files between them.  For files that need to permanently live on both computers, the ideal way to do this is to synchronize the files, as opposed to simply copying them. We only have room here to write a brief summary of synchronization, not a full article.  In short, there are several different types of synchronization: Where the contents of one folder are accessible anywhere, such as with Dropbox Where the contents of any number of folders are accessible anywhere, such as with Windows Live Mesh Where any files or folders from anywhere on your computer are synchronized with exactly one other computer, such as with the Windows “Briefcase”, Microsoft SyncToy, or (much more powerful, yet still free) SyncBack from 2BrightSparks.  This only works when both computers are on the same local network, at least temporarily. A great advantage of synchronization solutions is that once you’ve got it configured the way you want it, then the sync process happens automatically, every time.  Click a button (or schedule it to happen automatically) and all your files are automagically put where they’re supposed to be. If you maintain the same file and folder structure on both computers, then you can also sync files depend upon the correct location of other files, like shortcuts, playlists and office documents that link to other office documents, and the synchronized files still work on the other computer! Tip #25.  Hide Files You Never Need to See If you have your files well organized, you will often be able to tell if a file is out of place just by glancing at the contents of a folder (for example, it should be pretty obvious if you look in a folder that contains all the MP3s from one music CD and see a Word document in there).  This is a good thing – it allows you to determine if there are files out of place with a quick glance.  Yet sometimes there are files in a folder that seem out of place but actually need to be there, such as the “folder art” JPEGs in music folders, and various files in the root of the C: drive.  If such files never need to be opened by you, then a good idea is to simply hide them.  Then, the next time you glance at the folder, you won’t have to remember whether that file was supposed to be there or not, because you won’t see it at all! To hide a file, simply right-click on it and choose Properties: Then simply tick the Hidden tick-box:   Tip #26.  Keep Every Setup File These days most software is downloaded from the Internet.  Whenever you download a piece of software, keep it.  You’ll never know when you need to reinstall the software. Further, keep with it an Internet shortcut that links back to the website where you originally downloaded it, in case you ever need to check for updates. See tip #33 below for a full description of the excellence of organizing your setup files. Tip #27.  Try to Minimize the Number of Folders that Contain Both Files and Sub-folders Some of the folders in your organizational structure will contain only files.  Others will contain only sub-folders.  And you will also have some folders that contain both files and sub-folders.  You will notice slight improvements in how long it takes you to locate a file if you try to avoid this third type of folder.  It’s not always possible, of course – you’ll always have some of these folders, but see if you can avoid it. One way of doing this is to take all the leftover files that didn’t end up getting stored in a sub-folder and create a special “Miscellaneous” or “Other” folder for them. Tip #28.  Starting a Filename with an Underscore Brings it to the Top of a List Further to the previous tip, if you name that “Miscellaneous” or “Other” folder in such a way that its name begins with an underscore “_”, then it will appear at the top of the list of files/folders. The screenshot below is an example of this.  Each folder in the list contains a set of digital photos.  The folder at the top of the list, _Misc, contains random photos that didn’t deserve their own dedicated folder: Tip #29.  Clean Up those CD-ROMs and (shudder!) Floppy Disks Have you got a pile of CD-ROMs stacked on a shelf of your office?  Old photos, or files you archived off onto CD-ROM (or even worse, floppy disks!) because you didn’t have enough disk space at the time?  In the meantime have you upgraded your computer and now have 500 Gigabytes of space you don’t know what to do with?  If so, isn’t it time you tidied up that stack of disks and filed them into your gorgeous new folder structure? So what are you waiting for?  Bite the bullet, copy them all back onto your computer, file them in their appropriate folders, and then back the whole lot up onto a shiny new 1000Gig external hard drive! Useful Folders to Create This next section suggests some useful folders that you might want to create within your folder structure.  I’ve personally found them to be indispensable. The first three are all about convenience – handy folders to create and then put somewhere that you can always access instantly.  For each one, it’s not so important where the actual folder is located, but it’s very important where you put the shortcut(s) to the folder.  You might want to locate the shortcuts: On your Desktop In your “Quick Launch” area (or pinned to your Windows 7 Superbar) In your Windows Explorer “Favorite Links” area Tip #30.  Create an “Inbox” (“To-Do”) Folder This has already been mentioned in depth (see tip #13), but we wanted to reiterate its importance here.  This folder contains all the recently created, received or downloaded files that you have not yet had a chance to file away properly, and it also may contain files that you have yet to process.  In effect, it becomes a sort of “to-do list”.  It doesn’t have to be called “Inbox” – you can call it whatever you want. Tip #31.  Create a Folder where Your Current Projects are Collected Rather than going hunting for them all the time, or dumping them all on your desktop, create a special folder where you put links (or work folders) for each of the projects you’re currently working on. You can locate this folder in your “Inbox” folder, on your desktop, or anywhere at all – just so long as there’s a way of getting to it quickly, such as putting a link to it in Windows Explorer’s “Favorite Links” area: Tip #32.  Create a Folder for Files and Folders that You Regularly Open You will always have a few files that you open regularly, whether it be a spreadsheet of your current accounts, or a favorite playlist.  These are not necessarily “current projects”, rather they’re simply files that you always find yourself opening.  Typically such files would be located on your desktop (or even better, shortcuts to those files).  Why not collect all such shortcuts together and put them in their own special folder? As with the “Current Projects” folder (above), you would want to locate that folder somewhere convenient.  Below is an example of a folder called “Quick links”, with about seven files (shortcuts) in it, that is accessible through the Windows Quick Launch bar: See tip #37 below for a full explanation of the power of the Quick Launch bar. Tip #33.  Create a “Set-ups” Folder A typical computer has dozens of applications installed on it.  For each piece of software, there are often many different pieces of information you need to keep track of, including: The original installation setup file(s).  This can be anything from a simple 100Kb setup.exe file you downloaded from a website, all the way up to a 4Gig ISO file that you copied from a DVD-ROM that you purchased. The home page of the software manufacturer (in case you need to look up something on their support pages, their forum or their online help) The page containing the download link for your actual file (in case you need to re-download it, or download an upgraded version) The serial number Your proof-of-purchase documentation Any other template files, plug-ins, themes, etc that also need to get installed For each piece of software, it’s a great idea to gather all of these files together and put them in a single folder.  The folder can be the name of the software (plus possibly a very brief description of what it’s for – in case you can’t remember what the software does based in its name).  Then you would gather all of these folders together into one place, and call it something like “Software” or “Setups”. If you have enough of these folders (I have several hundred, being a geek, collected over 20 years), then you may want to further categorize them.  My own categorization structure is based on “platform” (operating system): The last seven folders each represents one platform/operating system, while _Operating Systems contains set-up files for installing the operating systems themselves.  _Hardware contains ROMs for hardware I own, such as routers. Within the Windows folder (above), you can see the beginnings of the vast library of software I’ve compiled over the years: An example of a typical application folder looks like this: Tip #34.  Have a “Settings” Folder We all know that our documents are important.  So are our photos and music files.  We save all of these files into folders, and then locate them afterwards and double-click on them to open them.  But there are many files that are important to us that can’t be saved into folders, and then searched for and double-clicked later on.  These files certainly contain important information that we need, but are often created internally by an application, and saved wherever that application feels is appropriate. A good example of this is the “PST” file that Outlook creates for us and uses to store all our emails, contacts, appointments and so forth.  Another example would be the collection of Bookmarks that Firefox stores on your behalf. And yet another example would be the customized settings and configuration files of our all our software.  Granted, most Windows programs store their configuration in the Registry, but there are still many programs that use configuration files to store their settings. Imagine if you lost all of the above files!  And yet, when people are backing up their computers, they typically only back up the files they know about – those that are stored in the “My Documents” folder, etc.  If they had a hard disk failure or their computer was lost or stolen, their backup files would not include some of the most vital files they owned.  Also, when migrating to a new computer, it’s vital to ensure that these files make the journey. It can be a very useful idea to create yourself a folder to store all your “settings” – files that are important to you but which you never actually search for by name and double-click on to open them.  Otherwise, next time you go to set up a new computer just the way you want it, you’ll need to spend hours recreating the configuration of your previous computer! So how to we get our important files into this folder?  Well, we have a few options: Some programs (such as Outlook and its PST files) allow you to place these files wherever you want.  If you delve into the program’s options, you will find a setting somewhere that controls the location of the important settings files (or “personal storage” – PST – when it comes to Outlook) Some programs do not allow you to change such locations in any easy way, but if you get into the Registry, you can sometimes find a registry key that refers to the location of the file(s).  Simply move the file into your Settings folder and adjust the registry key to refer to the new location. Some programs stubbornly refuse to allow their settings files to be placed anywhere other then where they stipulate.  When faced with programs like these, you have three choices:  (1) You can ignore those files, (2) You can copy the files into your Settings folder (let’s face it – settings don’t change very often), or (3) you can use synchronization software, such as the Windows Briefcase, to make synchronized copies of all your files in your Settings folder.  All you then have to do is to remember to run your sync software periodically (perhaps just before you run your backup software!). There are some other things you may decide to locate inside this new “Settings” folder: Exports of registry keys (from the many applications that store their configurations in the Registry).  This is useful for backup purposes or for migrating to a new computer Notes you’ve made about all the specific customizations you have made to a particular piece of software (so that you’ll know how to do it all again on your next computer) Shortcuts to webpages that detail how to tweak certain aspects of your operating system or applications so they are just the way you like them (such as how to remove the words “Shortcut to” from the beginning of newly created shortcuts).  In other words, you’d want to create shortcuts to half the pages on the How-To Geek website! Here’s an example of a “Settings” folder: Windows Features that Help with Organization This section details some of the features of Microsoft Windows that are a boon to anyone hoping to stay optimally organized. Tip #35.  Use the “Favorite Links” Area to Access Oft-Used Folders Once you’ve created your great new filing system, work out which folders you access most regularly, or which serve as great starting points for locating the rest of the files in your folder structure, and then put links to those folders in your “Favorite Links” area of the left-hand side of the Windows Explorer window (simply called “Favorites” in Windows 7):   Some ideas for folders you might want to add there include: Your “Inbox” folder (or whatever you’ve called it) – most important! The base of your filing structure (e.g. C:\Files) A folder containing shortcuts to often-accessed folders on other computers around the network (shown above as Network Folders) A folder containing shortcuts to your current projects (unless that folder is in your “Inbox” folder) Getting folders into this area is very simple – just locate the folder you’re interested in and drag it there! Tip #36.  Customize the Places Bar in the File/Open and File/Save Boxes Consider the screenshot below: The highlighted icons (collectively known as the “Places Bar”) can be customized to refer to any folder location you want, allowing instant access to any part of your organizational structure. Note:  These File/Open and File/Save boxes have been superseded by new versions that use the Windows Vista/Windows 7 “Favorite Links”, but the older versions (shown above) are still used by a surprisingly large number of applications. The easiest way to customize these icons is to use the Group Policy Editor, but not everyone has access to this program.  If you do, open it up and navigate to: User Configuration > Administrative Templates > Windows Components > Windows Explorer > Common Open File Dialog If you don’t have access to the Group Policy Editor, then you’ll need to get into the Registry.  Navigate to: HKEY_CURRENT_USER \ Software \ Microsoft  \ Windows \ CurrentVersion \ Policies \ comdlg32 \ Placesbar It should then be easy to make the desired changes.  Log off and log on again to allow the changes to take effect. Tip #37.  Use the Quick Launch Bar as a Application and File Launcher That Quick Launch bar (to the right of the Start button) is a lot more useful than people give it credit for.  Most people simply have half a dozen icons in it, and use it to start just those programs.  But it can actually be used to instantly access just about anything in your filing system: For complete instructions on how to set this up, visit our dedicated article on this topic. Tip #38.  Put a Shortcut to Windows Explorer into Your Quick Launch Bar This is only necessary in Windows Vista and Windows XP.  The Microsoft boffins finally got wise and added it to the Windows 7 Superbar by default. Windows Explorer – the program used for managing your files and folders – is one of the most useful programs in Windows.  Anyone who considers themselves serious about being organized needs instant access to this program at any time.  A great place to create a shortcut to this program is in the Windows XP and Windows Vista “Quick Launch” bar: To get it there, locate it in your Start Menu (usually under “Accessories”) and then right-drag it down into your Quick Launch bar (and create a copy). Tip #39.  Customize the Starting Folder for Your Windows 7 Explorer Superbar Icon If you’re on Windows 7, your Superbar will include a Windows Explorer icon.  Clicking on the icon will launch Windows Explorer (of course), and will start you off in your “Libraries” folder.  Libraries may be fine as a starting point, but if you have created yourself an “Inbox” folder, then it would probably make more sense to start off in this folder every time you launch Windows Explorer. To change this default/starting folder location, then first right-click the Explorer icon in the Superbar, and then right-click Properties:Then, in Target field of the Windows Explorer Properties box that appears, type %windir%\explorer.exe followed by the path of the folder you wish to start in.  For example: %windir%\explorer.exe C:\Files If that folder happened to be on the Desktop (and called, say, “Inbox”), then you would use the following cleverness: %windir%\explorer.exe shell:desktop\Inbox Then click OK and test it out. Tip #40.  Ummmmm…. No, that’s it.  I can’t think of another one.  That’s all of the tips I can come up with.  I only created this one because 40 is such a nice round number… Case Study – An Organized PC To finish off the article, I have included a few screenshots of my (main) computer (running Vista).  The aim here is twofold: To give you a sense of what it looks like when the above, sometimes abstract, tips are applied to a real-life computer, and To offer some ideas about folders and structure that you may want to steal to use on your own PC. Let’s start with the C: drive itself.  Very minimal.  All my files are contained within C:\Files.  I’ll confine the rest of the case study to this folder: That folder contains the following: Mark: My personal files VC: My business (Virtual Creations, Australia) Others contains files created by friends and family Data contains files from the rest of the world (can be thought of as “public” files, usually downloaded from the Net) Settings is described above in tip #34 The Data folder contains the following sub-folders: Audio:  Radio plays, audio books, podcasts, etc Development:  Programmer and developer resources, sample source code, etc (see below) Humour:  Jokes, funnies (those emails that we all receive) Movies:  Downloaded and ripped movies (all legal, of course!), their scripts, DVD covers, etc. Music:  (see below) Setups:  Installation files for software (explained in full in tip #33) System:  (see below) TV:  Downloaded TV shows Writings:  Books, instruction manuals, etc (see below) The Music folder contains the following sub-folders: Album covers:  JPEG scans Guitar tabs:  Text files of guitar sheet music Lists:  e.g. “Top 1000 songs of all time” Lyrics:  Text files MIDI:  Electronic music files MP3 (representing 99% of the Music folder):  MP3s, either ripped from CDs or downloaded, sorted by artist/album name Music Video:  Video clips Sheet Music:  usually PDFs The Data\Writings folder contains the following sub-folders: (all pretty self-explanatory) The Data\Development folder contains the following sub-folders: Again, all pretty self-explanatory (if you’re a geek) The Data\System folder contains the following sub-folders: These are usually themes, plug-ins and other downloadable program-specific resources. The Mark folder contains the following sub-folders: From Others:  Usually letters that other people (friends, family, etc) have written to me For Others:  Letters and other things I have created for other people Green Book:  None of your business Playlists:  M3U files that I have compiled of my favorite songs (plus one M3U playlist file for every album I own) Writing:  Fiction, philosophy and other musings of mine Mark Docs:  Shortcut to C:\Users\Mark Settings:  Shortcut to C:\Files\Settings\Mark The Others folder contains the following sub-folders: The VC (Virtual Creations, my business – I develop websites) folder contains the following sub-folders: And again, all of those are pretty self-explanatory. Conclusion These tips have saved my sanity and helped keep me a productive geek, but what about you? What tips and tricks do you have to keep your files organized?  Please share them with us in the comments.  Come on, don’t be shy… Similar Articles Productive Geek Tips Fix For When Windows Explorer in Vista Stops Showing File NamesWhy Did Windows Vista’s Music Folder Icon Turn Yellow?Print or Create a Text File List of the Contents in a Directory the Easy WayCustomize the Windows 7 or Vista Send To MenuAdd Copy To / Move To on Windows 7 or Vista Right-Click Menu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows Track Daily Goals With 42Goals Video Toolbox is a Superb Online Video Editor Fun with 47 charts and graphs Tomorrow is Mother’s Day Check the Average Speed of YouTube Videos You’ve Watched OutlookStatView Scans and Displays General Usage Statistics

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  • Raycasting "fisheye effect" question

    - by mattboy
    Continuing my exploration of raycasting, I am very confused about how the correction of the fisheye effect works. Looking at the screenshot below from the tutorial at permadi.com, the way I understand the cause of the fisheye effect is that the rays that are cast are distances from the player, rather than the distances perpendicular to the screen (or camera plane) which is what really needs to be displayed. The distance perpendicular to the screen then, in my world, should simply be the distance of Y coordinates (Py - Dy) assuming that the player is facing straight upwards. Continuing the tutorial, this is exactly how it seems to be according to the below screenshot. From my point of view, the "distorted distance" below is the same as the distance PD calculated above, and what's labelled the "correct distance" below should be the same as Py - Dy. Yet, this clearly isn't the case according to the tutorial. My question is, WHY is this not the same? How could it not be? What am I understanding and visualizing wrong here?

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