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• OpenGL 3.3 different colours with fragment shader [solved]

  - by Andrew Seymour

  I'm an OpenGL newbie. I'm trying to colour 3 circles but only 3 white circles are appearing. n is 3 in this example. Each vertice has 5 points, 2 for position and 3 for color Here is where I think a problem may lie: glEnableVertexAttribArray(0); glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer); glVertexAttribPointer( 0, …

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• Breakpoint pointing out "objc_autoreleaseNoPool"

  - by Andrew

  So I'm debugging an app in preperation for its app so release, and I enabled a universal breakpoint for "All Exceptions". Since then, everytime I run the app, the console prints: Catchpoint 2 (throw)Pending breakpoint 1 - "objc_exception_throw" resolved objc[11765]: Object 0x8f18ff0 of class __NSCFLocale autoreleased with no pool in place…

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• Do I have to call release on an objective-c retain class variable when setting it to a new object?

  - by Andrew Arrow

  Say I have: @property (nonatomic,retain) NSString *foo; in some class. And I call: myclass.foo = [NSString stringWithString:@"string1"]; myclass.foo = [NSString stringWithString:@"string2"]; Should I have called [myclass.foo release] before setting it to "string2" to avoid a memory leak? Or the fact that nothing is pointing to the first…

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• How do you remove functionality from a program in ruby?

  - by Andrew Grimm

  You have some code you want to remove associated with an obsolete piece of functionality from a ruby project. How do ensure that you get rid of all of the code? Some guidelines that usually help in refactoring ruby apply, but there are added challenges because having code that isn't being called by anything won't break any unit tests.

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• Can Grails exceptionHandler support the following Error Handling Flow

  - by Andrew

  In my rails app that I am porting to grails whenever an unexpected error occurs I intercept the error automatically and display a form to the user informing them that an error has occured and asking them for further information. Meanwhile, as the form is rendered I write the stack trace and other information about who was logged in to a…

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• Does SQL Server have any kind of magic undo feature?

  - by Andrew G. Johnson

  Long story short is I tried to quickly update a single row in SQL Server using the Management studio and just typed UPDATE table SET column='value' and forgot the WHERE other_column='other_value' portion. Went for lunch, came back and theres 15 unread emails waiting for me. Happened about an hour ago, waiting for the database guy to…

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• How can I dynamically load and execute all of the Javascript files in a directory?

  - by Andrew

  I'm making a very simple content-management system in Javascript. It uses plugins which are individual .js files which live in a "modules" folder. Currently I'm loading them with JQuery's getScript() function, but I have to manually define the list of available modules. Is there any way to dynamically load the list of Javascript…

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• Changing printer preferences in Windows programmatically

  - by Andrew Alexander

  I've written a script that installs several printers for a new user. I want to change the settings on some of these so that they can print on both sides of the page. I BELIEVE this involves modifying an attribute with printui, however it might need VB script or possibly another .NET language (I'd either use VB, C# or…

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• What is the most efficient way to delete all selected items in a ListViewItem collection

  - by Andrew

  My user is able to select multiple items in a ListView collection that is configured to show details (that is, a list of rows). What I want to do is add a Delete button that will delete all of the selected items from the ListViewItem collection associated with the ListView. The collection of selected items is…

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• Android App - XML or java

  - by Andrew Cochrane

  Hello - I am currently starting to create an app for a small charity company. But Im not entirely sure how to properly learn how to code for the Android OS. I have searched online for tutorials but most stop at the same stage and only show you how to launch the "helloWorld" app. My question is this: 1) Will…

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• Why is my web page left-aligned on iPad?

  - by Andrew

  I recently built a site and centered it using margin: 0 auto. I also wrapped elements in a .wrapper class with a width set to 960px and then had the parent element extend across the whole browser. When I view the Brands screen on an iPad though, the site is left-aligned and does not extend across the whole…

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• what is the best method of concatenating a series of binary files into one file?

  - by Andrew

  hello everyone i have a series of PDF byte arrays in a arraylist files that i wish to concatenate into one file, currently when the PDF application trys to open the file is it corrupted: foreach (byte[] array in files) { using (Stream s = new MemoryStream(downloadbytes)) …

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• BlackBerry responseXML is null

  - by Andrew

  I'm trying to port a portion of AJAX code I wrote over to the BlackBerry application's embedded browser. Our base build is 4.6.1 and the RIM documentation claims that XMLHttpRequest's responseXML is available starting with this version. And when I request an XML file from my local server, I get back the…

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• Python - removing double quotation marks " so that script runs

  - by andrew k

  I am using Python scripts to edit the table of many shape files. The following script runs fine, but if there are any " marks in the SIT_FULL_S field, the script errors and shuts down. gp.CalculateField_management(fc + "\\Parcels.shp","SIT_FULL_S", "!SIT_FULL_S!.lstrip('0')", "PYTHON")…

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• asp.net, wcf authentication and caching

  - by andrew

  I need to place my app business logic into a WCF service. The service shouldn't be dependent on ASP.NET and there is a lot of data regarding the authenticated user which is frequently used in the business logic hence it's supposed to be cached (probably using a distributed cache). As for…

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• Selecting Element followed by text with Selenium WebDriver

  - by Andrew

  I am using Selenium WebDriver and the Python bindings to automate some monotonous WordPress tasks, and it has been pretty straightforward up until this point. I am trying to select a checkbox, but the only way that I can identify it is by the text following it. Here is the relevant…

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• Common Utility for Exception Searching

  - by Andrew

  I wrote this little helper method to search the exception chain for a particular exception (either equals or super class). However, this seems like a solution to a common problem, so was thinking it must already exist somewhere, possibly in a library I have already imported. So,…

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• JTable cells not rendering shapes properly

  - by Andrew

  I'm trying to render my JTable cells with a subclassed JPanel and the cells should appear as coloured rectangles with a circle drawn on them. When the table displays initially everything looks OK but then when a dialog or something is displayed over the cells when it is removed…

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• Should I pick VS 2010 or 2008 for F# development?

  - by Andrew

  And is F# support included Express editions of Visual Studio?

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• When can argv[0] have null ?

  - by andrew-dufresne

  What I have understand about passing arguments to main() from command line is that argc has a minimum value of 1 and argv[0] will always have the program name with its path in it. If arguments are provided at the command line, then argc will have a value greater than one and…

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• Is it okay for multiple objects to retain the same object in Objective-C/Cocoa?

  - by Andrew Arrow

  Say I have a tableview class that lists 100 Foo objects. It has: @property (nonatomic, retain) NSMutableArray* fooList; and I fill it up with Foos like: self.fooList = [NSMutableArray array]; while (something) { Foo* foo = [[Foo alloc] init]; [fooList…

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• Check if web form values has changed. Best practice

  - by Andrew Florko

  Hello everybody, I have multi-step form and user can navigate to any page to modify or add information. There is a menu that shows progress and steps user completed. This menu allows to navigate to any step user completed or going to complete. Inspite of big…

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• App Engine: how would you... snapshotting entities

  - by Andrew B.

  Let's say you have two kinds, Message and Contact, related by a db.ListProperty of keys on Message. A user creates a message, adds some contacts as recipients, and emails the message. Later, the user deletes one of the contact entities that was a recipient…

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• Zend Framework: My custom form filter is not filtering!

  - by Andrew

  So I have a form that is using a custom filter (which is really just a copy of Zend_Filter_Null). When I call it directly, it works: $makeZeroNull = new My_Filter_MakeZeroNull(); $null = $makeZeroNull->filter('0'); //$null === null However, when I try to…

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• How can I theme custom form(drupal 6.x)

  - by Andrew

  DRUPAL 6.X I have this custom form constructor inside my custom module which is invoke through ajax request. I’m attempting to theme this form with the template file reside in my theme directory. For that matter, I’ve registered my theme inside template.php…

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