大约有 40,000 项符合查询结果(耗时:0.0313秒) [XML]

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What is a “callable”?

...t's clear what a metaclass is , there is an associated concept that I use all the time without knowing what it really means. ...
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Is there a difference between “==” and “is”?

... a True In your case, the second test only works because Python caches small integer objects, which is an implementation detail. For larger integers, this does not work: >>> 1000 is 10**3 False >>> 1000 == 10**3 True The same holds true for string literals: >>> "a" i...
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Fastest way to list all primes below N

...4.0 | | sundaram3 | 416.0 | +---------------------+-------+ Of all the methods tested, allowing numpy, for n=1000000, primesfrom2to was the fastest tested. +---------------------+-------+ | Method | ms | +---------------------+-------+ | primesfrom2to | 15.9 | | p...
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Filter by property

...to Python to evaluate the property--and at that point, you've already done all the work to load it. share | improve this answer | follow | ...
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What do I use for a max-heap implementation in Python?

... amazed that there IS such a built-in solution in heapq. But then it is totally unreasonable that it is NOT even slightly mentioned at all in the official document! WTF! – RayLuo Apr 21 '15 at 6:48 ...
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Should I be using object literals or constructor functions?

....bar; } However, this is not favorable with regards to encapsulation: Ideally, all the data + behaviour associated with an entity should live together. share | improve this answer | ...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

... token is converted into a token. (2.7). The resulting tokens are syntactically and semantically analyzed and translated as a translation unit. [SNIP] Translated translation units and instantiation units are combined as follows: [SNIP] All external entity references are resolved. Library components ...
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clang: how to list supported target architectures?

Currently I am interested in ARM in general and specifically iphone/android targets. But I just want to know more about clang, since it feels to play important role in the years to come. ...
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Mac zip compress without __MACOSX folder?

... How might I do this recursively for all zip files? – Wowfunhappy Jun 27 '17 at 3:56 ...
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How can you set class attributes from variable arguments (kwargs) in python

...riable number of arguments and then sets them as class attributes conditionally. 10 Answers ...