大约有 40,000 项符合查询结果(耗时:0.0686秒) [XML]

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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?

.....] Boolean values behave like the values 0 and 1, respectively, in almost all contexts, the exception being that when converted to a string, the strings "False" or "True" are returned, respectively. There is also, for Python 2: In numeric contexts (for example when used as the argument to an ...
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Is .NET/Mono or Java the better choice for cross-platform development? [closed]

... Well....Java is actually more portable. Mono isn't implemented everywhere, and it lags behind the Microsoft implementation significantly. The Java SDK seems to stay in better sync across platforms (and it works on more platforms). I'd also ...
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Declaring variables inside or outside of a loop

... The scope of local variables should always be the smallest possible. In your example I presume str is not used outside of the while loop, otherwise you would not be asking the question, because declaring it inside the while loop would not be an option, since it would not comp...
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How to create GUID / UUID?

I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc. ...
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Comparing two NumPy arrays for equality, element-wise

...two NumPy arrays for equality (where equality is defined as: A = B iff for all indices i: A[i] == B[i] )? 6 Answers ...
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Why do people use __(double underscore) so much in C++

...specific, and are slightly more detailed than some others have suggested. All identifiers that contain a double underscore or start with an underscore followed by an uppercase letter are reserved for the use of the implementation at all scopes, i.e. they might be used for macros. In addition, all ...
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How do I base64 encode (decode) in C?

... *output_length = 4 * ((input_length + 2) / 3); char *encoded_data = malloc(*output_length); if (encoded_data == NULL) return NULL; for (int i = 0, j = 0; i < input_length;) { uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0; uint32_t octet_b = ...
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BaseException.message deprecated in Python 2.6

...of the exception hierarchy. Provides an 'args' attribute that contains all arguments passed to the constructor. Suggested practice, though, is that only a single string argument be passed to the constructor.""" __str__ and __repr__ are already implemented in a meaningful way, especiall...
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How to use Sphinx's autodoc to document a class's __init__(self) method?

... as it doesn't need to be editing .rst files. – jcarballo Aug 27 '13 at 17:44 9 In Sphinx 1.2.1, ...
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What's the difference between a proxy server and a reverse proxy server? [closed]

...ccurate, but perhaps too terse. I will try to add some examples. First of all, the word "proxy" describes someone or something acting on behalf of someone else. In the computer realm, we are talking about one server acting on the behalf of another computer. For the purposes of accessibility, I wi...