大约有 44,000 项符合查询结果（耗时：0.0420秒） [XML]
How to convert linq results to HashSet or HashedSet
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I don't think there's anything built in which does this... but it's really easy to write an ex...
Cached, PHP generated Thumbnails load slowly
...ey are both true then the following check should be made:
Is there a HTTP_IF_MODIFIED_SINCE header
Is the cached version's last modified time the same as the HTTP_IF_MODIFIED_SINCE
If either of these are false the cached thumbnail should be returned.
If both of these are true then a 304 http st...
In what order do static/instance initializer blocks in Java run?
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edited Aug 10 '14 at 3:28
answered Jan 5 '10 at 17:05
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Getting indices of True values in a boolean list
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>>> %timeit [i for i, x in enumerate(t) if x]
100 loops, best of 3: 2.55 ms per loop
>>> %timeit list(compress(xrange(len(t)), t))
1000 loops, best of 3: 696 µs per loop
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Shorter syntax for casting from a List to a List?
... custom conversion operators. ( see http://stackoverflow.com/questions/14523530/why-does-the-linq-cast-helper-not-work-with-the-implicit-cast-operator )
This method does not work for an object that has a explicit operator method (framework 4.0)
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How do I sort unicode strings alphabetically in Python?
...rithms are briefly summarized here: http://unicode.org/faq/collation.html#13. These are rather exotic special cases, which should rarely matter in practice.
>>> import icu # pip install PyICU
>>> sorted(['a','b','c','ä'])
['a', 'b', 'c', 'ä']
>>> collator = icu.Collator...
Checking if a list is empty with LINQ
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edited Sep 3 '08 at 9:35
answered Sep 3 '08 at 8:38
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What is the use of the @ symbol in PHP?
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643
It suppresses error messages — see Error Control Operators in the PHP manual.
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Entity Framework - Include Multiple Levels of Properties
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Bill Tür
2,61388 gold badges2929 silver badges3636 bronze badges
answered May 30 '12 at 19:38
Diego TorresDiego To...
FirstOrDefault: Default value other than null
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edited Oct 19 '12 at 10:53
answered Oct 19 '12 at 10:34
Ra...