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• Store interface in array list java

  - by agazerboy

  Hi all, I am learning java. I am trying to use composite design pattern. I am trying to use following logic. ( Don't laugh I know it is very basic :) ) Item -> interface Folder -> class File -> class In folder class, can I create an arraylist of Item to store files information? ArrayList<Item> info = ArrayList<Item>(); Or should I use Folder Arraylist? ArrayList<Folder> info = ArrayList<Folder>(); I don't know if interface can store real data as there is no variable just function definitions. Thanks for helping a newbie :)

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• C# extern int ? How do I make a global var across classes and namespaces ?

  - by dr d b karron

  Dear C#'ers; As an old C/C++ programmer, I want to keep a global int counter across all of MY namespaces and classes. Public static extern int EventCount; Is not working; the VS2010 compiler won't let me have an extern int. Even with a DLLImport. [DllImport ( "SilverlightApplication37.dll" )] public static extern int EventCount; VS2010 complains Error 1 The modifier 'extern' is not valid for this item so how do i have a global int across all my code ? Cheers! dr.K

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• Storing CLLocationCoordinates2D in NSMutableArray

  - by Amarsh

  After some searching, I got the following solution : ref: http://stackoverflow.com/questions/1392909/nsmutablearray-addobject-with-mallocd-struct CLLocationCoordinate2D* new_coordinate = malloc(sizeof(CLLocationCoordinate2D)); new_coordinate->latitude = latitude; new_coordinate->longitude = longitude; [points addObject:[NSData dataWithBytes:(void *)new_coordinate length:sizeof(CLLocationCoordinate2D)]]; free(new_coordinate); And access it as: CLLocationCoordinate2D* c = (CLLocationCoordinate2D*) [[points objectAtIndex:0] bytes]; However, someone claims that there is a memory leak here? Can anyone suggest me where is the leak and how to fix it. Further, is there a better way of storing a list of CLLocationCoordinate2D in NSMutableArray? Please give sample code since I am an Objective C newbie.

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• Control process concurrency in PHP

  - by Ivan

  I have programmed a simple app that every X minutes checks if an image has changed in several websites and downloads it. It's very simple: downloads image header, make some CRC checks, downloads the file, stores in a MySQL database some data about each image and process next item... This process takes about 1 minute to complete. The problem is I have noticed that while the server is executing this process I cannot access to any page in the website, even those that don't require MySQL. I don't know why it is happening and I have no clue about how to fix it. Perhaps a more advanced PHP programmer can help me.

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• C# if statement. inner workings Q

  - by Mike Mengell

  I've just come across this code snippet in some Exchange 2010 code and I was wondering if anyone knew why the programmer has done it this way. I've never seen an If statement formatted like this. It seems so backwards there must be a good reason for it?? if (true == MsgItem.HasAttachments) { // Code } I'm assuming it might have some optimisation over the various other ways of coding the same thing; if (MsgItem.HasAttachments) { // Code } or if (MsgItem.HasAttachments == true) { // Code } Its not a big deal I'm just curious. Thanks, Mike

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• Drupal : Custom views filter

  - by Joseph

  Hi, First thing I would say is that I am a Drupal newbie. So, I would appreciate your answer in a detailed step by step process. I am using Drupal 6 and location module. There are two main content types - user profile (using content profile module) and event content type. Both have one field for location. Now, lets suppose in his profile, user is selecting city as Toronto and province as Ontario. And some events have been added for Toronto city. I need one Views, which will display events from user city. So, if user is from Vancouver, and they click on "my city events", they will see list of events from their city. Someone told me that I can achieve this using arguments/ relationships, but I don't know how to do that. Can someone please help me out? I am not good at PHP either :(

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• What is annotations and how do it actually works for frameworks like Spring ?

  - by Rachel

  I am new to Spring and now a days I hear a lot about Spring Framework. I have two sets of very specific questions: Set No. 1: What are annotations in general ? How does annotations works specifically with Spring framework ? Can annotations be used outside Spring Framework or are they Framework specific ? Set No. 2: What module of Spring Framework is widely used in Industry ? I think it is Spring MVC but why it is the most used module, if am correct or correct me on this ? I am newbie to Spring and so feel free to edit this questions to make more sense.

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• Whats the deal with python?

  - by gmatt

  My interests in programming lie mainly in algorithms, and lately I have seen many reputable researchers write a lot of their code in python. How easy and convenient is python for scientific computing? Does it have a library of algorithms that compares to matlab's? Is Python a scripting language or does it compile? Is it a great language for prototyping an algorithm? How long would it take me to learn enough of it to be productive provided I know C well and OO programming somewhat? Is it OO based? Sorry for the condensed format of questions, but I'm very curious and was hoping a more experienced programmer could help me out.

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• Cannot Access Kickstart.php

  - by user282659

  Hey All Let me explain you the scenario upto now.. Been a newbie to Joomla I managed to build my own website using Joomla CMS in my computers localhost. Then after the completion of the site, I wanted to upload my Local Joomla Site to a GoDaddy Server / Hosting Account.. Thanks to Google I found the below mentioned tutorial, http://zensamarketing.com/2009/07/how-to-use-joomlapack-and-kickstart-to-upload-your-local-joomla-site-to-a-godaddy-server-hosting-account/ So far I completed up to the 7th step, But I'm stuck at the step 08. I'm using Filezilla as my FTP client, Using that I uploaded the files as per the guided on step 07 and when I try to access www.mysitename.com/kickstart.php, it is giving me the below error, Forbidden You don't have permission to access /kickstart.php on this server. Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request. How can I set permission... Please explain in a non technical way.. Thank you so much in advance smile

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• Good book(s) for MMORPG design & implementation?

  - by mawg

  I am a long time professional C/C++ programmer (mostly embedded systems) and a hobbyist windows & php hacker. Can anyone recommend a book(s) specifically aimed at designing and (hopefully) implementing an MMORPG? I don't need general how to design or how to code books. Maybe a really good generic games book, but I am not interested in 1st person shooters, I want to know what it takes to implement an MMORPG. Good books, maybe also good URLs. Thanks just searching eBay and Amazon threw up a whole slew of books. Amazon's customer reviews give me an idea of how good they are, and the overview tells me what areas they cover

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• How do I learn Flash Game Development?

  - by grokker

  I'm currently a PHP programmer and one of my childhood dreams is to create a game. The problem is I don't know Flash. I'm not great at drawing stuff or even artistic. I could program a little with JavaScript and I could consider myself intermediate with JQuery. Question How do I get started with Flash Game development? What books do I read first? The type of game is a side scroller about an Indiana Jones type of character and the setting is on the jungle with trees and snakes and a lot of animals.

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• generating an asp.net web application dll requirement list

  - by Oren Mazor

  I'm trying to set up a web app (32bit on ii7/win7, 32bit setting is enabled, everything is compiled to x86, using vs2008), but there's clearly some dll module loading issue happening. I've been watching procmon and fusion logs but I'm not seeing the name of the missing dll. I'm a complete newbie to asp.net (but fairly heavy experience on other platforms). I know I can call depends.exe on a binary to see what the dependancies are, but how do I do it for asp.net? specifically, is it possible to get a list of the dlls that iis7 loads for my application?

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• how do you organize your programming work

  - by dole

  Hi there, I'm a newbie in the field, but in the near future I have to develop an application for a friend(I've already did some work of the app and the friend is happy). I assume that I need 3 places to store my work, but I'm not sure if this is the best approach. I need your advice, opinion, link,book, blog about this subject. I plan to have: a place where I develop the application a place where I keep a back-up of the application a place with the application ready for use I'll use git in the development stage, but for the later I don't know what tools to use, or which are the good practices. Can you give me an advice?

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• [C++] Wrong EOF when unzipping binary file

  - by djzmo

  Hello there, I tried to unzip a binary file to a membuf from a zip archive using Lucian Wischik's Zip Utils: http://www.wischik.com/lu/programmer/zip_utils.html http://www.codeproject.com/KB/files/zip_utils.aspx FindZipItem(hz, filename.c_str(), true, &j, &ze); char *content = new char[ze.unc_size]; UnzipItem(hz, j, content, ze.unc_size); delete[] content; But it didn't unzip the file correctly. It stopped at the first 0x00 of the file. For example when I unzip an MP3 file, it will only unzip the first 4 bytes: 0x49443303 (ID3\0) because the 5th to 8th byte is 0x00000000. I also tried to capture the ZR_RESULT, and it always return ZR_OK (which means completed without errors). I think this guy also had the same problem, but no one replied to his question: http://www.codeproject.com/KB/files/zip_utils.aspx?msg=2876222#xx2876222xx Any kind of help would be appreciated :)

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• installing NUMPY for Mac OSX 10.7. (Lion) for use with Python

  - by user1744871

  I Need to use nltk and numpy with Python. I am a newbie to Python and initially used the python 2.7.3 that came with my mac (currently running OSX 10.7.5). I learned that the apple version of python may not be robust so I downloaded the standard version from python.org. I have downloaded the nltk program for Mac OSX 10.7. This seemed to install fine. I am trying to download and install numpy using the instructions from the scipy website. http://www.scipy.org/Installing_SciPy/Mac_OS_X. I cloned numpy from github but when I tried to build it using the following command $ python setup.py build I received the following error MacOS/Python: can't open file 'setup.py': [Errno 2] No such file or directory I also tried to build it using the scons command $ python setupscons.py scons --jobs=2 and received the following error /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: can't open file 'setupscons.py': [Errno 2] No such file or directory Can anyone think of a possible workaround?

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• Sync offline JQuery Mobile form

  - by Dimas

  My name is Dimas and I work as a developer in a hospital. I've developed a web form with JQuery Mobile which is accessed from an Android tablet. It sends data (text and FILES) to the server (PHP) and it's saved in a MySQL database. This tablets are used by doctors that are visiting the patients in their homes. Some of these patients live in remote areas with very bad Internet connection, so I'm thinking on use HTML5 Offline feature to solve these situations. I started reading about it but I'm newbie with this technology. I've some questions: Do you think this is the best/easiest solution? If I could save the form data in a local sqlite storage when the tablet is offline, how I could synchronize it with the data in MySQL server when the tablet become online? Thanks

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• Bash variable kills script execution

  - by Kyle Terry

  Sorry if this is better suited at serverfault, but I think it learns more towards the programming side of things. I have some code that's going into /etc/rc.local to detect what type of touch screen monitor is plugged in and changes out the xorg.conf before launching X. Here is a small snippet: CURRENT_MONITOR=`ls /dev/usb | grep 'egalax_touch\|quanta_touch'` case $CURRENT_MONITOR in '') CURRENT_MONITOR='none' ;; esac If one of those two touch screens is plugged in, it works just fine. If any other monitor is plugged in, it stops at the "CURRENT_MONITOR=ls /dev/usb | grep 'egalax_touch\|quanta_touch'." For testing I touched two files. One before creating CURRENT_MONITOR and one after CURRENT_MONITOR and only file touched before is created. I'm not a bash programmer so this might be something very obvious.

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• Reference book on Ruby on Rails social network site for novices

  - by Christopher

  Hey, so I am a novice programmer who has only worked with HTML, CSS, and a touch of Java a couple of years ago. I am looking to try to get a social network site up and running on Ruby on Rails and was looking at RailsSpace: Building a Social Networking Website with Ruby on Rails (Addison-Wesley Professional Ruby Series) - Paperback (July 30, 2007) by Michael Hartl. This was published in 2007, however, and the newer reviews say it is not very helpful. Does anyone know if there are any new publications out there that walk you through building a social network site while teaching you the code(rather than just using a out of the box program)? Thanks

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• Real thing about "->" and "."

  - by fsdfa

  I always wanted to know what is the real thing difference of how the compiler see a pointer to a struct (in C suppose) and a struct itself. struct person p; struct person *pp; pp->age, I always imagine that the compiler does: "value of pp + offset of atribute "age" in the struct". But what it does with person.p? It would be almost the same. For me "the programmer", p is not a memory address, its like "the structure itself", but of course this is not how the compiler deal with it. My guess is it's more of a syntactic thing, and the compiler always does (&p)->age. I'm correct?

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• Drupal email users

  - by msindle

  I'm using Drupal 6.16: When a user creates an account on my site I have them select a category (ie children, youth, adult, etc). This is done with the select list box using the content_profile module. I have a content type that posts an announcement. In this content type is a check box that says 'email group'. Right now it does nothing, but what I would like for it to do is e-mail all the users that are associated with the group they chose when signing up for their account. If this will require extra code please be specific as I am not a strong php programmer. Thanks for the help!! msindle

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• What tricks can be used to type and edit code faster?

  - by Thomas

  As Jeff Atwood noted, we are typists first, programmers second. Fast typing and editing may not be essential to be a good programmer, but it certainly helps. I noticed that I consciously and subconsciously use various tricks to get my intent across to the computer as fast as possible. What tricks can be used to type and edit code faster? I'm hoping to collect a nice list here that we can all learn from, so that we can be ever so slightly more productive. One trick per answer please! (This is not about typing speed in general. There are other questions about that. It's also not about general answers like "learn your editor's shortcut keys". Think of this topic as micro-optimizations for specific cases. See my own answers for examples of what I mean.)

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• Automatically CONCATENATE text on data entry

  - by Bill T

  I am a newbie and need help. I have a table called "Employees". It has 2 fields [number] and [encode]. I want to automatically take whatever number is entered into [number] and store it in [encode] so that it is preceded by the appropriate amount of 0's to always make 12 digits. Example: user enters '123' into [number], '000000000123' is automatically stored in [encode] user enters '123456789' into [number], '000123456789' is automatically stored in [encode] I think i want to write a trigger to accomplish this. I think that would make it happen at the time of data entry. is that right? The main idea is would be something like this: variable1 = LENGTH [number] variable2 = REPEAT (0,12-variable1) variable3 = CONCATENATE (variable2, [number]) [encode] = variable3 I just don't know enough to make this happen ANY help would be FANTASTIC. I have SQL-SERVER 2005 and both fields are text

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• How can I see who in my team are writing the most code and who is writing the least using TFS?

  - by kjm

  I am having a problem with one of my team members output. He seems to be always 'busy' yet I am unable to see exactly what code he has done and he seems be delivering very little and it seems to take a long time to do so. I'd like to investigate further using TFS and was wondering if there is any functionality in TFS that shows what has been written by an individual or similar? Just to clarify I am NOT spying I am trying to resolve situation. This is only a starting point. I un derstand that quantity of code does not equate to best programmer thanks for any answers

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• Converting ASP.NET MVC to n-Tiered Architecture

  - by Jeff

  I just built an application using ASP.NET MVC. The programmers at my company want to build all future modules using n-Tiered (Presentation Layer, Business Logic Layer, Data Access Layer) architecture. I am not the programmer and need to know why this makes sense? Do I have to completely rewrite the entire code or can it be converted? We are building an HRIS system with Business Intelligence. Somebody please explain why or why not this approach does or does not make sense.

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• Using sessions & session variables in a PHP Login Script

  - by user1325291

  I have just finished creating an entire login and register systsem in PHP, but my problem is I haven't used any sessions yet. (Like, there's not the word "session" in the entire script). I'm kind of a newbie in PHP and I've never used sessions before. What I want to do it, after the user registers and fills out the login form, they will still stay on the same page. So, like one half of the page will be if the session is logged_in and the other part will be else (the user is not logged in so display the login form). I also want to create session variables which will hold the username and password given at login. Thanks in advance! BTW this is my website - CP Cheats

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