大约有 47,000 项符合查询结果（耗时：0.1026秒） [XML]
“Cloning” row or column vectors
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83
Here's an elegant, Pythonic way to do it:
>>> array([[1,2,3],]*3)
array([[1, 2, 3],
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Search and replace in bash using regular expressions
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Use sed:
MYVAR=ho02123ware38384you443d34o3434ingtod38384day
echo "$MYVAR" | sed -e 's/[a-zA-Z]/X/g' -e 's/[0-9]/N/g'
# prints XXNNNNNXXXXNNNNNXXXNNNXNNXNNNNXXXXXXNNNNNXXX
Note that the subsequent -e's are processed in order. Also, the g flag f...
How to put multiple statements in one line?
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edited Dec 22 '17 at 10:31
Matthew Murdoch
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Port 80 is being used by SYSTEM (PID 4), what is that?
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32 Answers
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Post-increment and pre-increment within a 'for' loop produce same output [duplicate]
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338
After evaluating i++ or ++i, the new value of i will be the same in both cases. The differenc...
How do I reset a sequence in Oracle?
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answered Sep 18 '08 at 15:34
Doug PorterDoug Porter
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Cross browser JavaScript (not jQuery…) scroll to top animation
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edited Oct 21 '15 at 13:59
Marcos Lima
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answered Jan 18 '12 a...
npm can't find package.json
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answered Apr 5 '12 at 17:36
AldoAldo
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What exactly does big Ө notation represent?
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edited Aug 20 '17 at 2:43
Pierre-Antoine Guillaume
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answered Apr ...
Passing parameters to addTarget:action:forControlEvents
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13 Answers
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