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What does glLoadIdentity() do in OpenGL?

I'm new to OpenGL and I'm a little overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do. ...
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undefined reference to boost::system::system_category() when compiling

...do.) Assuming you use gcc, try adding -lboost_system to your compiler command line in order to link against that library. share | improve this answer | follow ...
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How do I make a textbox that only accepts numbers?

...e past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with perhaps a regular expression, or depend on the values of othe...
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What's the difference between console.dir and console.log?

... Now it seems that console.log and console.dir actually return the same representation on [1,2,3] in Firefox. – xji Jun 18 '18 at 16:27 ...
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Is there a way of setting culture for a whole application? All current threads and new threads?

...here a way of setting culture for a whole application? All current threads and new threads? 10 Answers ...
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Simulate delayed and dropped packets on Linux

I would like to simulate packet delay and loss for UDP and TCP on Linux to measure the performance of an application. Is there a simple way to do this? ...
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How to redirect output of an already running process [duplicate]

Normally I would start a command like 5 Answers 5 ...
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Detect the specific iPhone/iPod touch model [duplicate]

... game that utilizes the peer-to-peer bluetooth capabilities of the iPhone (and probably the iPod touch 2nd generation). However, to stop the users from trying to play a multiplayer on an iPod 1st gen and iPhone 2G I need to check for the specific device model. ...
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What is the most efficient way of finding all the factors of a number in Python?

... The reduce(list.__add__, ...) is taking the little lists of [fac1, fac2] and joining them together in one long list. The [i, n/i] for i in range(1, int(sqrt(n)) + 1) if n % i == 0 returns a pair of factors if the remainder when you divide n by the smaller one is zero (it doesn't need to check the...
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jquery live hover

...ery 1.4.1 now supports "hover" for live() events, but only with one event handler function: $("table tr").live("hover", function () { }); Alternatively, you can provide two functions, one for mouseenter and one for mouseleave: $("table tr").live({ mouseenter: function () { }, mous...