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How do Python's any and all functions work?

... | +-----------------------------------------+---------+---------+ | Empty Iterable | False | True | +-----------------------------------------+---------+---------+ Note 1: The empty iterable case is explained in the official documentation, like this any Return T...
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What is the pythonic way to detect the last element in a 'for' loop?

... Most of the times it is easier (and cheaper) to make the first iteration the special case instead of the last one: first = True for data in data_list: if first: first = False else: between_items() item() This wi...
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What is the correct way to create a single-instance WPF application?

...approach described by the article is advantageous for two reasons. First, it does not require a dependency on the Microsoft.VisualBasic assembly. If my project already had a dependency on that assembly, I would probably advocate using the approach shown in another answer. But as it is, I do not u...
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Java generics - why is “extends T” allowed but not “implements T”?

... between whether a class 'implements' or 'extends'. The constraint possibilities are 'extends' and 'super' - that is, is this class to operate with assignable to that other one (extends), or is this class assignable from that one (super). ...
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Can you break from a Groovy “each” closure?

Is it possible to break from a Groovy .each{Closure} , or should I be using a classic loop instead? 6 Answers ...
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Internal typedefs in C++ - good style or bad style?

... I think it is excellent style, and I use it myself. It is always best to limit the scope of names as much as possible, and use of classes is the best way to do this in C++. For example, the C++ Standard library makes heavy use of typ...
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Difference between onStart() and onResume()

I can't get the meaning of onStart() transition state. The onResume() method is always called after onStart() . Why can't it be the onResume() is invoked after onRestart() and onCreate() methods just excluding onStart() ? What is its purpose? ...
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Most efficient way to remove special characters from string

... Why do you think that your method is not efficient? It's actually one of the most efficient ways that you can do it. You should of course read the character into a local variable or use an enumerator to reduce the number of array accesses: public static string RemoveSpecialC...
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Remove IE10's “clear field” X button on certain inputs?

It's a useful feature, to be sure, but is there any way to disable it? For instance, if the form is a single text field and already has a "clear" button beside it, it's superfluous to also have the X. In this situation, it would be better to remove it. ...
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C dynamically growing array

I have a program that reads a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes... ...