大约有 9,000 项符合查询结果(耗时:0.0308秒) [XML]

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Most lightweight way to create a random string and a random hexadecimal number

... Interesting, I kind of forgot that Python (and the random module) handles bigints natively. – wump May 6 '10 at 18:49 3 ...
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Why Collections.sort uses merge sort instead of quicksort?

...was a fine choice, but today but we can do much better. Since 2003, Python's list sort has used an algorithm known as timsort (after Tim Peters, who wrote it). It is a stable, adaptive, iterative mergesort that requires far fewer than n log(n) comparisons when running on partially sorte...
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How to convert a boolean array to an int array

...d seeing all the different ways to do it. Really opened my mind regarding python. – Kwolf Jul 6 '13 at 20:49 ...
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What do two question marks together mean in C#?

...st a plain int, which is non-nullable). – Suzanne Dupéron Jul 11 '13 at 9:52 add a comment  |  ...
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Keep only date part when using pandas.to_datetime

...osed, it does not really solve the performance problem (it still relies on python datetime objects, and hence any operation on them will be not vectorized - that is, it will be slow). A better performing alternative is to use df['dates'].dt.floor('d'). Strictly speaking, it does not "keep only date...
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How do I register a DLL file on Windows 7 64-bit?

... edited Oct 31 '12 at 9:55 René Höhle 23.6k1313 gold badges6565 silver badges7171 bronze badges answered Oct 31 '12 at 9:35 ...
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Bitwise operation and usage

...10 0101 1111 1111 << 4 gives 1111 0000 Note that the left shift in Python is unusual in that it's not using a fixed width where bits are discarded - while many languages use a fixed width based on the data type, Python simply expands the width to cater for extra bits. In order to get the dis...
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How do you round a float to two decimal places in jruby

... Puedes traducir tu respuesta a inglés? Preguntas y respuestas en español deben existir aqui. – intcreator Jun 7 '17 at 19:36 add a co...
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How to get a resource id with a known resource name?

...May 5 '19 at 14:39 Gastón Saillén 7,72144 gold badges3030 silver badges4848 bronze badges answered Aug 13 '10 at 11:42 ...
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Remove header and footer from window.print()

...nged the body margin to padding and it worked. – André Guimarães Sakata Nov 7 '17 at 13:17 ...