大约有 47,000 项符合查询结果（耗时：0.0788秒） [XML]
Can you define aliases for imported modules in Python?
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answered Apr 1 '09 at 17:34
vartecvartec
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Clear Text Selection with JavaScript
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answered Jul 3 '10 at 0:46
Gert GrenanderGert Grenander
15.7k66 gold badges3535 silver badges4343 bronze badges
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Unique combination of all elements from two (or more) vectors
...aybe what you are after
> expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 DEF 2012-05-01
3 GHI 2012-05-01
4 ABC 2012-05-02
5 DEF 2012-05-02
6 GHI 2012-05-02
7 ABC 2012-05-03
8 DEF 2012-05-03
9 GHI 2012-05-03
10 ABC 2012-05-04
11 DEF 2012-05-04
12 GHI 2012-05-04
13 AB...
Rounding DateTime objects
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130
Floor
long ticks = date.Ticks / span.Ticks;
return new DateTime( ticks * span.Ticks );
Round...
Performance - Date.now() vs Date.getTime()
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106
These things are the same (edit semantically; performance is a little better with .now()):
var...
Node.js client for a socket.io server
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answered May 22 '12 at 14:05
alessioalexalessioalex
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How to find available versions for a bower dependency
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user2461271user2461271
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4
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Difference between Django's annotate and aggregate methods?
...gt; q = Book.objects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_authors
1
q is the queryset of books, but each book has been annotated with the number of authors.
share
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Autoincrement VersionCode with gradle extra properties
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208
I would like to read the versionCode from an external file
I am sure that there are any nu...
How to conclude your merge of a file?
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answered Jan 21 '10 at 21:30
MBOMBO
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