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using extern template (C++11)

...t file size. For example: // header.h template<typename T> void ReallyBigFunction() { // Body } // source1.cpp #include "header.h" void something1() { ReallyBigFunction<int>(); } // source2.cpp #include "header.h" void something2() { ReallyBigFunction<int>(); } ...
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How do I animate constraint changes?

... Two important notes: You need to call layoutIfNeeded within the animation block. Apple actually recommends you call it once before the animation block to ensure that all pending layout operations have been completed You need to call it specifically on the ...
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if checkbox is checked, do this

...me power of jQuery to access properties of an element. The article specifically treats the use of .attr("id") but in the case that #checkbox is an <input type="checkbox" /> element the issue is the same for $(...).attr('checked') (or even $(...).is(':checked')) vs. this.checked. ...
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How can I add or update a query string parameter?

... @JarónBarends - Tweak value check to check against undefined and null to allow setting 0 values Third Update There was a bug where removing a querystring variable directly before a hashtag would lose the hashtag symbol which has been fixed Fourth Update Thanks @rooby for pointing out a regex o...
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What is an existential type?

...hrough the Wikipedia article Existential types . I gathered that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between ...
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Python: finding an element in a list [duplicate]

What is a good way to find the index of an element in a list in Python? Note that the list may not be sorted. 10 Answers ...
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Recommended way of making React component/div draggable

...React.createClass({ getDefaultProps: function () { return { // allow the initial position to be passed in as a prop initialPos: {x: 0, y: 0} } }, getInitialState: function () { return { pos: this.props.initialPos, dragging: false, rel: null // position...
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How to get the second column from command output?

... | improve this answer | follow | answered Apr 21 '13 at 22:57 cataycatay 33822 silver badges22 bron...
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Is it possible to serialize and deserialize a class in C++?

...e it, here. The only native way to do it is to use streams. That's essentially all the Boost::serialization library does, it extends the stream method by setting up a framework to write objects to a text-like format and read them from the same format. For built-in types, or your own types with op...
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CSV new-line character seen in unquoted field error

the following code worked until today when I imported from a Windows machine and got this error: 9 Answers ...