大约有 47,000 项符合查询结果（耗时：0.0617秒） [XML]
What does auto do in margin:0 auto?
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Eric Bishard
4,48855 gold badges4040 silver badges6767 bronze badges
answered Jul 3 '10 at 8:05
djdd87djdd87
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while (1) Vs. for (;;) Is there a speed difference?
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218
In perl, they result in the same opcodes:
$ perl -MO=Concise -e 'for(;;) { print "foo\n" }'
a ...
Loading custom configuration files
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OliverOliver
37.1k77 gold badges8080 silver badges132132 bronze badges
1
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What does numpy.random.seed(0) do?
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598
np.random.seed(0) makes the random numbers predictable
>>> numpy.random.seed(0) ; nump...
Is inject the same thing as reduce in ruby?
...t an array, but beware of duck typing! (3_000_000_000_000_000.size returns 8 and 3_000_000_000_000_000_000_000_000_000_000_000_000_000_000.size returns 20; it seems to be the amount of memory it takes up.)
– ChrisPhoenix
Oct 15 '14 at 1:39
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jQuery map vs. each
... remove an item from an array. For example:
var items = [0,1,2,3,4,5,6,7,8,9];
var itemsLessThanEqualFive = $.map(items, function(i) {
// removes all items > 5
if (i > 5)
return null;
return i;
});
// itemsLessThanEqualFive = [0,1,2,3,4,5]
You'll also note that the this is not ...
An efficient way to transpose a file in Bash
... }
print str
}
}' file
output
$ more file
0 1 2
3 4 5
6 7 8
9 10 11
$ ./shell.sh
0 3 6 9
1 4 7 10
2 5 8 11
Performance against Perl solution by Jonathan on a 10000 lines file
$ head -5 file
1 0 1 2
2 3 4 5
3 6 7 8
4 9 10 11
1 0 1 2
$ wc -l < file
10000
$ time perl test.pl ...
What is the default scope of a method in Java?
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edited Mar 28 '12 at 19:09
answered Apr 3 '09 at 17:01
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Sending images using Http Post
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edited May 8 '11 at 17:16
answered May 30 '10 at 0:55
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Deleting DataFrame row in Pandas based on column value
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answered Aug 11 '13 at 14:38
tshaucktshauck
14.6k77 gold badges3030 silver badges3636 bronze badges
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