大约有 9,000 项符合查询结果(耗时:0.0308秒) [XML]
Most lightweight way to create a random string and a random hexadecimal number
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Interesting, I kind of forgot that Python (and the random module) handles bigints natively.
– wump
May 6 '10 at 18:49
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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...
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...
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...
How do you round a float to two decimal places in jruby
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Puedes traducir tu respuesta a inglés? Preguntas y respuestas en español deben existir aqui.
– intcreator
Jun 7 '17 at 19:36
add a co...
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
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