大约有 40,000 项符合查询结果(耗时:0.0533秒) [XML]

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What does “&” at the end of a linux command mean?

...s will not stay alive after the shell session is closed. SIGHUP terminates all running processes. By default anyway. If your command is long-running or runs indefinitely (ie: microservice) you need to pr-pend it with nohup so it remains running after you disconnect from the session: nohup sh my_scr...
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How to convert a data frame column to numeric type?

... and this is not the most confounding thing, but it can confuse you, especially if you read this before rolling into bed. Here goes: first two columns are character. I've deliberately called 2nd one fake_char. Spot the similarity of this character variable with one that Dirk created in his reply. I...
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Enum ToString with user friendly strings

... @RayL linked as it will only add the extension method to Enums. If that's all you want to use this for (as indicated with the ArgumentException, then there's no reason to have the method be completely generic. – krillgar Aug 4 '14 at 12:32 ...
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How do I remove a big file wrongly committed in git [duplicate]

... The command you are looking for is filter-branch. It allows you to permanently remove files from an enlistment. This blog has a great tutorial on how to remove problematic files from the repository http://dalibornasevic.com/posts/2-permanently-remove-files-and-folders-from-a...
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be

...t seems that many projects slowly come upon a need to do matrix math, and fall into the trap of first building some vector classes and slowly adding in functionality until they get caught building a half-assed custom linear algebra library, and depending on it. ...
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Capturing multiple line output into a Bash variable

... Actually, RESULT contains what you want — to demonstrate: echo "$RESULT" What you show is what you get from: echo $RESULT As noted in the comments, the difference is that (1) the double-quoted version of the variable (e...
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Remove insignificant trailing zeros from a number?

Have I missed a standard API call that removes trailing insignificant zeros from a number? 15 Answers ...
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How to “git show” a merge commit with combined diff output even when every changed file agrees with

After doing a "simple" merge (one without conflicts), git show usually only shows something like 11 Answers ...
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Are “while(true)” loops so bad? [closed]

... I wouldn't say it's bad - but equally I would normally at least look for an alternative. In situations where it's the first thing I write, I almost always at least try to refactor it into something clearer. Sometimes it can't be helped (or the alternative i...
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Detect If Browser Tab Has Focus

...ct of this, and also the note about telling the user you have paused are really good notes. Thanks. – Fenton Sep 12 '11 at 14:30 7 ...