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Permutations in JavaScript?

... If you notice, the code actually splits the chars into an array prior to do any permutation, so you simply remove the join and split operation var permArr = [], usedChars = []; function permute(input) { var i, ch; for (i = 0; i < inp...
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Pass a parameter to a fixture function

... through the tester fixture. I had a similar problem--I have a fixture called test_package, and I later wanted to be able to pass an optional argument to that fixture when running it in specific tests. For example: @pytest.fixture() def test_package(request, version='1.0'): ... request....
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Why would one use nested classes in C++?

... it at any time so you can not use it. Look at std::list or std::map they all contain hidden classes (or do they?). The point is they may or may not, but because the implementation is private and hidden the builders of the STL were able to update the code without affecting how you used the code, or...
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What do (lambda) function closures capture?

...the name and scope of the variable, not the object it's pointing to. Since all the functions in your example are created in the same scope and use the same variable name, they always refer to the same variable. EDIT: Regarding your other question of how to overcome this, there are two ways that com...
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Find the nth occurrence of substring in a string

...ad been thinking of doing the equivalent of .rfind('XXX'), but that would fall apart if 'XXX' appears later in the input anyway. – Nikhil Chelliah Jul 7 '10 at 4:17 ...
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Remove HTML Tags in Javascript with Regex

I am trying to remove all the html tags out of a string in Javascript. Heres what I have... I can't figure out why its not working....any know what I am doing wrong? ...
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Chain-calling parent initialisers in python [duplicate]

... B inheriting from A, class C inheriting from B. What is a generic way to call a parent class initialiser in an initialiser? If this still sounds too vague, here's some code. ...
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Getting list of parameter names inside python function [duplicate]

... Well we don't actually need inspect here. >>> func = lambda x, y: (x, y) >>> >>> func.__code__.co_argcount 2 >>> func.__code__.co_varnames ('x', 'y') >>> >>> def func2(x,y=3): ... print(...
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Can comments be used in JSON?

... No. The JSON should all be data, and if you include a comment, then it will be data too. You could have a designated data element called "_comment" (or something) that would be ignored by apps that use the JSON data. You would probably be bett...
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Detect network connection type on Android

...twork is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType(). It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it useful. Here is a Gist of the...