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How do you render primitives as wireframes in OpenGL?

... glPolygonMode( GL_FRONT_AND_BACK, GL_LINE ); to switch on, glPolygonMode( GL_FRONT_AND_BACK, GL_FILL ); to go back to normal. Note that things like texture-mapping and lighting will still be applied to the wireframe lines if they're enabled, w...
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How to add to an existing hash in Ruby

...ash in Ruby, I'm in the process of working through Apress' Beginning Ruby and have just finished the hashes chapter. 7 Ans...
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Getting number of days in a month

..., month); Obviously it varies by year, as sometimes February has 28 days and sometimes 29. You could always pick a particular year (leap or not) if you want to "fix" it to one value or other. share | ...
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Why is git push gerrit HEAD:refs/for/master used instead of git push origin master

I've just started using gerrit and I want to know why we need to do git push gerrit HEAD:refs/for/master instead of doing git push origin master ...
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Why do I need Transaction in Hibernate for read-only operations?

...actions as read-only. Transactions for reading might look indeed strange and often people don't mark methods for transactions in this case. But JDBC will create transaction anyway, it's just it will be working in autocommit=true if different option wasn't set explicitly. But there is no guarantee ...
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django admin - add custom form fields that are not part of the model

... that based on these fields values I will build the long string expression and save it in the relevant model field. 5 Answe...
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Append a NumPy array to a NumPy array

... argument. Thus if you need to combine more than 2 arrays, vstack is more handy. – ruhong Oct 22 '15 at 12:57 ...
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How to overlay one div over another div

...gt; </div> I would suggest learning about position: relative and child elements with position: absolute. share | improve this answer | follow | ...
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Is there a way to get the source code from an APK file?

The hard drive on my laptop just crashed and I lost all the source code for an app that I have been working on for the past two months. All I have is the APK file that is stored in my email from when I sent it to a friend. ...
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How can i take an UIImage and give it a black border?

...eView, the image is viewed perfectly but the sides of image is left blank, and the same happens to the upper and lower portion of the image when image is landscape. The blank space looks ugly with border set to it.. Did you faced this issue? If yes, please suggest a method to solve this ...