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What's the _ underscore representative of in Swift References?

... Both answers were correct but I want to clarify a little bit more. _ is used to modify external parameter name behavior for methods. In Local and External Parameter Names for Methods section of the documentation, it says: Swift gives the first parameter name in a method a local paramete...
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Priority queue in .Net [closed]

...st int GrowFactor = 2; private const int MinGrow = 1; private int _capacity = InitialCapacity; private T[] _heap = new T[InitialCapacity]; private int _tail = 0; public int Count { get { return _tail; } } public int Capacity { get { return _capacity; } } protected Comp...
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Python: Best way to add to sys.path relative to the current running script

...single line to each file, add a import statement at top e.g. import import_my_lib keep import_my_lib.py in bin and import_my_lib can correctly set the python path to whatever lib you want share | ...
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Which is more preferable to use: lambda functions or nested functions ('def')?

...orted(['a1', 'b0'], key= lambda x: int(x[1])) – Chris_Rands Apr 9 '18 at 12:09 add a comment  |  ...
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Checking images for similarity with OpenCV

...e the L2 relative error between images. double errorL2 = norm( A, B, CV_L2 ); // Convert to a reasonable scale, since L2 error is summed across all pixels of the image. double similarity = errorL2 / (double)( A.rows * A.cols ); return similarity; } else { //Images have a differen...
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How do I get a PHP class constructor to call its parent's parent's constructor?

.../ main class that everything inherits class Grandpa { public function __construct() { } } class Papa extends Grandpa { public function __construct($bypass = false) { // only perform actions inside if not bypassing if (!$bypass) { } // call Gra...
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Use logging print the output of pprint

...rmatter to add name and levelname when logging. It looks a little untidy: __main__ : DEBUG : ['aaaaaaaaaaaaaaaaaaaa', 'bbbbbbbbbbbbbbbbbbbb', 'cccccccccccccccccccc', 'dddddddddddddddddddd'] __main__ : DEBUG : Some other logging text There may be a more elegant solution, but this: for l...
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Accessing Object Memory Address

When you call the object.__repr__() method in Python you get something like this back: 9 Answers ...
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How to find the duration of difference between two dates in java?

...ce answer, I am facing one problem on your solution like I have two date 06_12_2017_07_18_02_PM and another one is 06_12_2017_07_13_16_PM, I am getting 286 seconds instead I should get only 46 seconds – Panchal Amit Dec 6 '17 at 14:14 ...
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

... push [ebp+8] ; pvReserved 769B2A2E call _CoInitializeEx@8 ; CoInitializeEx(x,x) 769B2A33 pop ebp 769B2A34 retn 4 可以看到,其中的实现还是比较简单的,它只是简单地调用了CoInitializeEx,将第二个...