大约有 43,000 项符合查询结果(耗时:0.0600秒) [XML]

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Does “\d” in regex mean a digit?

I found that in 123 , \d matches 1 and 3 but not 2 . I was wondering if \d matches a digit satisfying what kind of requirement? I am talking about Python style regex. ...
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How to trim a string to N chars in Javascript?

... And if you want ellipses for strings exceeding the max length (probably more helpful for longer max): var string = "this is a string"; var length = 20; var trimmedString = string.length > length ? string.substring(0, leng...
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Getting java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory exception

...& getting this exception. I have already included common-logging1.1.1.jar and spring.jar file. Could you please help to out? ...
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Understanding :source option of has_one/has_many through of Rails

Please help me in understanding the :source option of has_one/has_many :through association. The Rails API explanation makes very little sense to me. ...
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How to compare two tags with git?

I would like to do a diff between two tags and committed changes between those two tags. Could you please tell me the command? ...
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Split a string by a delimiter in python

...g, what is the difference between the first example (simply using split()) and the second example (with a for loop)? – EndenDragon Jun 26 '16 at 18:21 4 ...
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How to join multiple lines of file names into one with custom delimiter?

I would like to join the result of ls -1 into one line and delimit it with whatever i want. 22 Answers ...
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Get operating system info

...ing system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out. 7 Answers ...
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How do I use vi keys in ipython under *nix?

... In case someone's wandering in here recently, IPython 5.0 switched from readline to prompt_toolkit, so an updated answer to this question is to pass an option: $ ipython --TerminalInteractiveShell.editing_mode=vi ... or to set it globally in...
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What does each of the [y,n,q,a,d,/,K,j,J,g,e,?] stand for in context of git -p

... -p mode of git add -p or git stash -p what does each of the letters stand for? 2 Answers ...