大约有 48,000 项符合查询结果（耗时：0.0503秒） [XML]
Implementing slicing in __getitem__
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answered May 29 '10 at 22:56
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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twig: IF with multiple conditions
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
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brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...
Apply a function to every row of a matrix or a data frame
... 3 4
[3,] 5 6
R> apply(M, 1, function(x) 2*x[1]+x[2])
[1] 4 10 16
R>
This takes a matrix and applies a (silly) function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to apply().
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What happens if you static_cast invalid value to enum class?
...ering with a quote from the C++11 and C++14 Standards:
[expr.static.cast]/10
A value of integral or enumeration type can be explicitly converted to an enumeration type. The value is unchanged if the original value is within the range of the enumeration values (7.2). Otherwise, the resulting val...
Python: Ignore 'Incorrect padding' error when base64 decoding
...rs♦
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answered Mar 21 '12 at 14:57
Simon SapinSimon Sapin
8,326...
Why does `a == b or c or d` always evaluate to True?
...gt; ast.parse("if a == b or c or d or e: ...")
<_ast.Module object at 0x1031ae6a0>
>>> ast.dump(_)
"Module(body=[If(test=BoolOp(op=Or(), values=[Compare(left=Name(id='a', ctx=Load()), ops=[Eq()], comparators=[Name(id='b', ctx=Load())]), Name(id='c', ctx=Load()), Name(id='d', ctx=Load(...
C++: Rounding up to the nearest multiple of a number
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bdesham
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answered Aug 4 '10 at 15:44
Mark RansomMark Ra...
Best way to handle list.index(might-not-exist) in python?
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edited Jan 25 '10 at 14:32
answered Jan 25 '10 at 14:02
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How do I check if a number is a palindrome?
...d. Any algorithm you make will have to at least split the number into base-10 digits, which is 90% converted to a string anyway.
– Blorgbeard is out
Oct 13 '08 at 22:20
5
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Can you have if-then-else logic in SQL? [duplicate]
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106
You can make the following sql query
IF ((SELECT COUNT(*) FROM table1 WHERE project = 1) >...