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What is a “callable”?

Now that it's clear what a metaclass is , there is an associated concept that I use all the time without knowing what it really means. ...
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How to clear the canvas for redrawing

...perimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this? ...
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What is the advantage of using abstract classes instead of traits?

... performance overhead. However, you should make this choice only if you know that the trait in question constitutes a performance bottleneck and have evidence that using a class instead actually solves the problem. If you still do not know, after considering the above, then start by mak...
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Return a `struct` from a function in C

...function body as soon as the amount of memory allocated for a value isn't known at compile time. It is for structs, so C functions have no problem returning them. – reinierpost Feb 1 '15 at 19:11 ...
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Tutorials and libraries for OpenGL-ES games on Android [closed]

...ment I had only meant that I could not yet post urls on stackoverflow.com. Now that is no longer a problem I have removed the confusing comment, from my post. Thx for the feedback. Droidnova and the red book are problably the two main sites at which I should do my reading. – a...
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How would I extract a single file (or changes to a file) from a git stash?

I'd like to know if it is possible to extract a single file or diff of a file from a git stash without popping the stash changeset off. ...
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In Python, how do I iterate over a dictionary in sorted key order?

... You can now use OrderedDict in Python 2.7 as well: >>> from collections import OrderedDict >>> d = OrderedDict([('first', 1), ... ('second', 2), ... ('third', 3)]) >>> d.i...
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Is it possible to simulate key press events programmatically?

... It seems that this feature has been removed by now. MDN has considered it deprecated for quite a while, though. – Tacticus Dec 10 '16 at 19:30 ...
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IIS7 Cache-Control

... creates a web.config with the same configuration as Jeff posted. Nice to know! Thanks! – RandyMorris Jul 25 '11 at 1:12 2 ...
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How can you iterate over the elements of an std::tuple?

... overloads for every type the tuple might contain. This works best if you know all the tuple elements will share a common base class or something similar. share | improve this answer | ...