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  • is wisdom of what happens 'behind scenes' (in compiler, external DLLs etc.) important?

    - by I_Question_Things_Deeply
    I have been a computer-fanatic for almost a decade now. I've always loved and wondered how computers work, even from the purest, lowest hardware level to the very smallest pixel on the screen, and all the software around that. That seems to be my problem though ... as I try to write code (I'm pretty fluent at C++) I always sit there enormous amounts of time in front of a text-editor wondering how every line, statement, datum, function, etc. will correspond to every Assembly and machine instruction performed to do absolutely everything necessary for the kernel to allocate memory to run my compiled program, and all of the other hardware being used as well. For example ... I would write cout << "Before memory changed" << endl; and run the debugger to get the Assembly for this, and then try and reverse disassemble the Assembly to machine code based on my ISA, and then research every .dll, library file, linked library, linking process, linker source code of the program, the make file, the kernel I'm using's steps of processing this compilation, the hardware's part aside from the processor (e.g. video card, sound card, chipset, cache latency, byte-sized registers, calling convention use, DDR3 RAM and disk drive, filesystem functioning and so many other things). Am I going about programming wrong? I mean I feel I should know everything that goes on underneath English syntax on a computer program. But the problem is that the more I research every little thing the less I actually accomplish at all. I can never finish anything because of this mentality, yet I feel compelled to know everything... what should I do?

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  • I don't program in my spare time. Does that make me a bad developer?

    - by not-my-real-name
    A lot of blogs and advice on the web seem to suggest that in order to become a great developer, doing just your day job is not enough. For example, you should contribute to open source projects in your spare time, write smartphone apps, etc. In fact a lot of this advice seems to suggest that if you don't love programming enough to do it all day long then you're probably in the wrong career. That doesn't ring true with me. I enjoy my work, but when I come home from the office I'm not in the mood to jump straight back onto the computer and start coding away until bedtime. I only have a certain number of hours free time each day, and I'd rather spend them on other hobbies, seeing friends or going outside than in front of the computer. I do get a kick out of programming, and do hack around outside of work occasionally. I'm committed to my personal development and spend time reading tech blogs and books as a way to keep learning and becoming better. But that doesn't extend so far as to my wanting to use all my spare time for coding. Does this mean I'm not a 'true' software developer at heart? Is it possible to become a good software developer without doing extra outside your job? I'd be very interested to hear what you think.

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  • Mysql refusing connection: a very special connection issue

    - by k to the z
    I have my programers remoting into a web server with windows rdp. This web server is the only machine that can access another mysql server in a secure zone. When I remote into the web server from my machine I am able to connect to the mysql server through the mysql workbench on the web server. However, when I try this same procedure from another person's computer I can get into the server via rdp. I just can't connect to mysql using the workbench. I have checked and re checked the credentials and connection information. They match. I've had other people check and re check the credentials. As far as mysql permissions are concerned this user is allowed to connect from any machine. Plus I'm remoting into the same web server. The only difference seems to be which computer is remoting into the webserver. wtf?

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  • How can I make this arcade-highscore game more fun/interesting?

    - by j-a
    I'm having difficulties getting the fun factor into this iPhone game, and I am looking for some ideas or advice. I was asked to generalize the question a bit. What are some techniques for arcade highscore games that can be applied to this game in order to: Make each second of the game fun and challenging, from the first second to the end of the game. Regardless of skill level. Make the player want to try again and again to beat the high score. Briefly about the game: you aim using your finger and pull the bow chord and release by lifting your finger. That part feels quite nice how the bow interacts with the finger. The game idea: hearts fall down and you get 1 pt for each heart you shoot. You start with a few arrows and every now and then a bag of arrow comes down which - if you hit it, you get more arrows. Once your out of arrows the game is over. So it is all about beating your previous high score or your friends high scores. Unfortunately I don't find it that fun. Thankful for any ideas/suggestions/thoughts on how to make it more fun/interesting.

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  • Xorg and three button mouse: emulate more than scroll alone

    - by drumfire
    I'm happy with my three-button mouse. But it could have more functions. When I press the middle button (button 2) and move the mouse, I can scroll up/down and left/right. xev shows me that when I drag the mouse with button 2 pressed it actually emulates button 4 (scroll up), 5 (down), 6 (left) and 7 (right). But can we take this further? For example, I would like to emulate button 8 if I press button 1 and 2 together, and button 9 if i press button 2 and 3. This would allow me to have the 'back' and 'forward' functionality in my browser. It would also be nice to get more functionality by pressing, for example, shift+mouse1, alt+mouse2. You could have a whole new set of emulated keys. Can this be done and if yes, then how?

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  • after power outage, monitor won't turn on

    - by J82
    I had a power outage in my apartment today during a Windows 7 SP1 update. I installed SP1 and it told me to restart so I did and that's when the power outage happened. After the power came back on, I started the computer and it looks like the computer is running normally but my monitor is not getting a signal. I am using a Wacom Cintiq 21UX. I tried unplugging all the cords and plugs in the power strip and turning it back on. I also tried a strange method I read in another thread of removing the power cord, holding the on button for 30 seconds, putting the power cord back in, and turning it on. Still no dice. How can I get my monitor to turn on? please help..

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  • Autoplay for USB drive keeps popping up

    - by Adam Haile
    I have a Seagate external 2TB USB drive that when I leave it plugged in, the Autoplay dialog asking what to do with the drive pops up about once every 30-60 minutes. No matter how many times I tell it to go away, it keeps coming back. I have tried multiple power supplies, USB cables, and all the USB ports on my machine...but it keeps doing the same thing. Also, this does not happen with the same drive on a different computer. Could this be some power or configuration setting that is causing this? I'm running Windows 7 x64 (the computer it works on is x86)

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  • Using command line to connect to a wireless network with an http login

    - by Shane
    I'm trying to connect to a wifi network where it hijacks all requests and redirects you to a page where you have to agree to a terms of use before it lets you connect to the actual outside world. This is a pretty common practice, and usually doesn't pose much of a problem. However, I've got a computer running Ubuntu 9.10 server with no windowing system. How can I use the command line to agree to the terms of use? I don't have internet access on the computer to download packages via apt-get or anything like that. Sure, I can think of any number of workarounds, but I suspect there's an easy way to use wget or curl or something. Basically, I need a command line solution for sending an HTTP POST request essentially clicking on a button. For future reference, it'd be helpful to know how to send a POST request with, say, a username and password if I ever find myself in that situation in another hotel or airport.

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  • Is it time to deprecate synchronized, wait and notify?

    - by OldCurmudgeon
    Is there a single scenario (other than compatibility with ancient JVMs) where using synchronized is preferable to using a Lock? Can anyone justify using wait or notify over the newer systems? Is there any algorithm that must use one of them in its implementation? I see a previous questions that touched on this matter but I would like to take this a little further and actually deprecate them. There are far too many traps and pitfalls and caveats with them that have been ironed out with the new facilities. I just feel it may soon be time to mark them obsolete.

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  • Graphics hardware warning when updating to 14.04

    - by pacomet
    As I use Ubuntu at work I just update only LTS versions but now I'm not sure if I can/should. As my computer is now ten years old I would change if was mine but as it is owned by my employer I have to work with it. It's not a bad one, it runs fine (this was not true when still had Windows on it ;-). When updating to 14.04, it warns about possible bad/slow performance with Unity 3D so I stop updating as I am at work, not my own computer. As I understand from http://askubuntu.com/a/438958/25305 Nvidia Geforce FX 5500 graphics card is still supported in 14.04. Now, in 12.04, I have driver version 173 and unity 2d runs fine for me. output of /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce FX 5500/AGP/SSE2 OpenGL version string: 2.1.2 NVIDIA 173.14.39 Not software rendered: yes Not blacklisted: no GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no Should I update? Is it better to stay with 12.04? Thanks

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  • Cannot fix induced 0x7b error on XP

    - by Malfist
    I'm writing a tool that will automagically fix the STOP 0x7B error that occurs when windows cannot access the hard drive due to driver issues (usually). I've wrote a tool that does everything the Knowledge Base article says to do. But it's not working. I'm inducing the issue by changing the bios SATA controller to AHCI, then moving it to another computer and updating it's registry. When I move it back to the other computer, nothing new happens. Can someone tell me what more I need to do?

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  • MySQLwith mutiple threads and processes

    - by Abhan
    I'm developing a telecom messaging platform in C, and I'm going to need multiple processes to be working with MySQL DB. How can I make two processes read/write to/from a Mysql DB and, if/when one of them goes down, get the other to seamlessly take over the work until the dead process gets back to work? I was thinking/googling some options and am stuck in place where I don't know which one to choose. What I think so far is that table lock is not the best option to go for, as it will stall the other process until the table is unlocked. The other option is to use row-level locks or manual locks, but I can't find the best way to do it.

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  • Ubuntu won't log in after update

    - by Dave M G
    I just updated Ubuntu about 15 minutes ago on my desktop which is running 12.04. Within the set of updates, there were some kernel upgrades. It didn't say I needed to reboot after the update was finished, but I thought I would anyway. The computer successfully rebooted up to the login screen. However, after entering my password, the screen goes black for a moment, then it comes back to the login screen. I tried the suggestions in this question, but unfortunately they didn't help. In the accepted answer, the questioner vaguely says it was a "Unity problem". I'm using Gnome-classic with full Compiz effects. I tried uninstalling and reinstalling Compiz, but that didn't fix anything. So... I can't use my desktop computer until this is fixed. I hope there is some help soon. I've uploaded the output of cat /var/log/Xorg.0.log to Pastebin. A temporary solution of changing to gdm instead of lightdm was found with help in the chat room.

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  • Possible to change the order of the shortcut locations in windows explorer

    - by Codezilla
    When you open a new explorer window by default it loads from the starting position "Computer" which shows your drives, etc. This is all well and good except when explorer loads it bumps the scroll bar down so that half the favorites are cut off. I can scroll up to get to the ones I want but that gets really old doing that 50 times a day. I do clean out my favorites frequently but more are added all the time and used. In trying to come up with a fix for this problem I thought maybe it would be possible to move the link to "Computer" to be at the very top and the "Favorites" area directly under that but I can't figure out a way to do that. Anyone have an idea? Or maybe another solution I haven't thought of?

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  • How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)

    - by Pistos
    Alternatively: How do I take a non-square PNG and "fill out" the "rest" of the image with transparency so that the resulting square image has the original image centered in the square? ULTIMATELY, what I want is to take any image of any GM-supported format of any size, and create a scaled-down PNG (say, 40 pixels maximum for either dimension), with aspect ratio maintained, transparency-padded for non-square original images, AND with an already-prepared 40x40 PNG transparency mask applied. I already know how to scale down and keep aspect ratio; I already have the command for applying my composite. My only missing piece is square-alizing non-square images (padding with transparency). Single command preferred; multi-command chain acceptable. (edit) Extra info: Here's the composite command I'm using: gm composite -compose copyopacity mask.png source-and-target.png source-and-target.png where mask.png has white pixels for what I want to keep of source-and-target.png and transparent pixels for what I want to remove (and become transparent) of source-and-target.png.

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  • PowerShell script halts execution when Windows XP PC is locked

    - by jshin47
    I have the following script that does a continuous ping and reports failures. It works fine, except the loop apparently "suspends" when the computer is locked. I have confirmed this by starting the script, immediately locking the PC, waiting 10 minutes, and seeing how many pings have occurred. It is nowhere near the expected number. What could be the culprit? Write-Host "Entering monitoring loop..." -Background DarkRed $ping = new-object System.Net.NetworkInformation.Ping $count_up = 0 $count_dn = 0 $count_dd = 0 while ($true) { $result = $ping.send("10.1.1.1") if ($result.Status -eq "Success") { $count_up++ $count_dd = 0 } else { $count_dn++ $count_dd++ $this_date = Get-Date Write-Host "VPN ping failed at time " $this_date -Background Magenta if ($count_dd -gt 3) { Write-Host "***VPN is Down***" `a send_mail_notification("VPN is Down", "") } } if ($Host.UI.RawUI.KeyAvailable -and ("q" -eq $Host.UI.RawUI.ReadKey("IncludeKeyUp,NoEcho").Character)) { Write-Host "Exiting monitoring loop..." -Background DarkRed break; } Start-Sleep -m 250 } $total = $count_up + $count_dn $uptime = 100 * $count_up / $total Write-Host $count_up " out of " $total " pings for a " $uptime "% uptime."

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  • jquery ondrag map load only what has not been viewed

    - by David
    When a person mouse down, moves the mouse, and mouses up the system gets the different in the mouse down coord and the mouse up coords and loads in the new map items. However, the problem is it loads them every time so I want a way to track what has been loaded without too much work on checking or storing checks. Most promising. Came up with while typing this. Section the screen into 250x250 sectors and check if that sector has been loaded. Keep track of each corner of the screen and see if there is an area of those that have not loaded. Keep a record of the corners of the screen. When mouse up coords are greater then load the different. Problem is if they are at coord 10,000 then it will load from -10k to 10k positive and that is a lot of items to load. Check every item on the page to see if it is loaded. If I do this I might as well reload the whole page. If anyone has some suggestions; feel free to pass them on.

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  • Rotate a vector

    - by marc wellman
    I want my first-person camera to smoothly change its viewing direction from direction d1 to direction d2. The latter direction is indicated by a target position t2. So far I have implemented a rotation that works fine but the speed of the rotation slows down the closer the current direction gets to the desired one. This is what I want to avoid. Here are the two very simple methods I have written so far: // this method initiates the direction change and sets the parameter public void LookAt(Vector3 target) { _desiredDirection = target - _cameraPosition; _desiredDirection.Normalize(); _rotation = new Matrix(); _rotationAxis = Vector3.Cross(Direction, _desiredDirection); _isLooking = true; } // this method gets execute by the Update()-method if _isLooking flag is up. private void _lookingAt() { dist = Vector3.Distance(Direction, _desiredDirection); // check whether the current direction has reached the desired one. if (dist >= 0.00001f) { _rotationAxis = Vector3.Cross(Direction, _desiredDirection); _rotation = Matrix.CreateFromAxisAngle(_rotationAxis, MathHelper.ToRadians(1)); Direction = Vector3.TransformNormal(Direction, _rotation); } else { _onDirectionReached(); _isLooking = false; } } Again, rotation works fine; camera reaches its desired direction. But the speed is not equal over the course of movement - it slows down. How to achieve a rotation with constant speed ?

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  • Crap, hard disk failure. Can I recover my "move"d folders?

    - by Doug
    I am in the process of moving all my files from an old laptop to new one. I just moved 11gb of data from my old laptop to a hard drive (external) and then upon moving it out to the new hard drive, the hard drive is getting a CRC (Data Error (Cyclic Redundancy Check). Now I am looking for a solution to recover the files that I moved on my old laptop (not the external). I understand they they are just marked for potential overwriting to free up space. I was getting ready to test out GetDataBack, but it says to install it on a healthy windows and use the recover-needed drive as an external. However, I don't want to turn off my computer without first getting the okay since it is in a "moved" state. Please help! What can I do to recover the Moved files. I haven't touched the computer since it has been moved. What can I use to recover them?

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  • Where can I get a splitter to connect a device with a single 3.5 mm plug into the audio input/output jacks on my laptop?

    - by XinJeisan
    I recently bought the :Hype Retro Handset for Mobile Phone" -- its just a device that looks like a handset to use when chatting on a computer or mobile phone that plugs into the phone/computer with a single 3.5 mm plug. I was hoping to use it on my windows 7 Toshiba laptop. I can hear audio fine through the handset but what I'm saying is not being picked up on the handset. On the box it says "some phones and computers may need additional adapters," so I'm hoping it is possible to get a splitter or something for this to work properly. I did email the parent company (http://dglusa.com/) but I haven't heard from them, and, looking over their website, I doubt I will. I also went to the local radio shack, and the guy said I needed a splitter, but he didn't know where to get one. I can find the kind of splitter I think I need online, but I'm unsure whether they are just for output or can also do input/output.

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  • PCs with Wired Connection Keep Losing Internet Connectivity

    - by user717452
    I have a U-verse ATT DSL Internet at our church building. Recently, any computer that is plugged into the network via Ethernet keeps losing its internet connectivity. The setup is from the Modem to a Netgear Wireless Router, and from the router to 3 different computers. None of the laptops that use Wifi ever lose internet, just the wired ones, and I end up having to do ipconfig /release and /renew every day to get it back. One computer has Windows 7 and one has Windows XP. Any ideas as to what is going on with our network?

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  • Changing Word mail merge data source locations in bulk?

    - by Daft Viking
    I've just moved a number of Word mail merge files, and a number of Excel spreadsheets that are the data sources for the mail merges, from a Windows XP computer to a Windows 7 computer, and now all the paths for the merge sources are incorrect (used to be c:\documents and settings\user\my documents.... now c:\users\documents....). While I can correct the path of the data source in each file individually, I was hoping that there would be some way of updating the files in bulk, as there are a relatively large number of them. Word 2007 is what is being used, but the documents are all in the previous DOC format (not DOCX).

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  • Cannot copy anything onto WD Elements 1TB External USB HDD

    - by Aashish Vaghela
    I have a Western Digital 1023 Elements 1TB External USB HDD. Recently, it has started an unusual problem. I cannot copy any file of any size on to that 1TB hard-drive, eventhough it has more than 400 GB free (out of 931GB actual size). I tried copying movies from one friends laptop, which did not work. I also tried another desktop to copy some study material e-books (in PDF), which also did not work. I get same CRC error when I try to copy anything from a computer's hard-drive onto this WD 1TB hard-drive. Vice-versa it's working. I mean, I can copy any file from the USB HDD onto local machine's HDD on any computer. It's like one-way traffic. This HDD is only 1 year old. What are my options ? Any suggestions ? Regards, Aashish.V

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  • Dropbox fails to install on Ubuntu 13.10

    - by Fraxav
    I've done some research and it seems Dropbox has some problems with the status icon on Ubuntu 13.10, but I can't even manage to install it. The very first time, I installed nautilus-dropbox from the app center on a freshly installed Saucy, but I couldn't see the status icon and clicking the app icon wouldn't help, so I uninstalled and rebooted. The second and third time, the app just freezed at about 75% while installing from app manager, so I had to shut down the computer and uninstall. Next I tried to install dropbox from the .deb (from website): it installed (the launcher?) from app manager, then the dialog prompted me to start dropbox and finally to download the official daemon, but the download freezed at 0% and made everything else buggy/laggy (probably also because I restarted nautilus, as required, at that point). After a purge and clean from terminal, some icons and this file (which I suspect is somehow responsible, but of course is locked) are still present on my computer. Can anyone help me figure how how to install it? How could I remove that configuration file so I can give it a last shot?

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  • Virtualbox crashes quite often in Windows 8

    - by user1776158
    I just installed Windows 8 on my computer. I got the ISO and the product key from my university so the software itself is sound. I use alot of virtual box. And ever since I moved to Windows 8, I have noticed that virtual box crashes more often. In particular, it is very very bad at opening multiple guests. My CPU usage will be at like 20% and I only have 3 guests open and my entire computer just freezes. Cursor and all. In Windows 7, I was able to open like 6 (not that I ever needed to) and really push my CPU. I havent experience any other issues with Windows 8 yet. Has anyone encountered this? Thanks!

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