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Why doesn't Python have a sign function?
... it.
>>> math.copysign(1, -4)
-1.0
>>> math.copysign(1, 3)
1.0
If you get sick of passing two whole arguments, you can implement sign this way, and it will still be compatible with the IEEE stuff mentioned by others:
>>> sign = functools.partial(math.copysign, 1) # eit...
How do I select an element in jQuery by using a variable for the ID?
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answered Apr 13 '09 at 14:16
Rick HochstetlerRick Hochstetler
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Formatting “yesterday's” date in python
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answered Nov 11 '09 at 0:03
Jarret HardieJarret Hardie
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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（2）Spirit，LL parser framework，用C++代码直接表达EBNF；
（3）Graph，图组件和算法；
（4）Lambda，在调用的地方定义短小匿名的函数对象，很实用的functional功能；
（5）concept check，检查泛型编程中的concept；
（6）Mpl，用模板实现...
How to convert a string Date to long millseconds
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edited Oct 19 '16 at 12:53
ChristopheCVB
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How to turn off word wrapping in HTML?
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answered Jan 10 '11 at 23:21
JonJon
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Importing files from different folder
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30 Answers
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Do I set properties to nil in dealloc when using ARC?
... Lily BallardLily Ballard
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SQL Server - When to use Clustered vs non-Clustered Index?
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edited Dec 6 '13 at 0:43
Zain Rizvi
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Why does running the Flask dev server run itself twice?
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edited Nov 13 '17 at 13:15
answered Aug 26 '14 at 11:00
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