大约有 7,549 项符合查询结果(耗时:0.0154秒) [XML]

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Show percent % instead of counts in charts of categorical variables

...t count vs percentage histogram' so hopefully this helps distill all the information currently housed in comments on the accepted answer. Remark: If hp is not set as a factor, ggplot returns: share | ...
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Unix command to prepend text to a file

... This will work to form the output. The - means standard input, which is provide via the pipe from echo. echo -e "to be prepended \n another line" | cat - text.txt To rewrite the file a temporary file is required as cannot pipe back into the...
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The Following Module was built either with optimizations enabled or without debug information

... me. I'm the owner of the project, and I know it was built with debug information, as well as without optimizations. Furthermore, I'm never happy choosing the disabling of a warning as my first choice. Hiding/ignoring this warning could become an issue in a future debugging session. Since this o...
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Validating email addresses using jQuery and regex

...mes you just want to validate that the user entered the email in the right format. To identify typos like "2" instead of "@". So I like this better than the original answer but aSeptik's answer is comprehensive and I up-voted that as well. – darwindeeds Jul 18 ...
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Why does 2 == [2] in JavaScript?

...e correct word here. It is more to do with the implicit type conversion performed by == operator before comparing. – Chetan S Nov 12 '09 at 19:23 14 ...
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Proxies with Python 'Requests' module

... @cigar I knew because urllib2 uses the exact same format for their proxies dict, and when I saw docs.python-requests.org/en/latest/api/#module-requests say "proxies – (optional) Dictionary mapping protocol to the URL of the proxy.", I knew right away. ...
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How to run iPhone emulator WITHOUT starting Xcode?

...e iPhone Simulator: $ open /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app (Xcode 6+): $ open /Applications/Xcode.app/Contents/Developer/Applications/iOS Simulator.app You could create a symbolic-link from your Desktop ...
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Could not find com.google.android.gms:play-services:3.1.59 3.2.25 4.0.30 4.1.32 4.2.40 4.2.42 4.3.23

... Just install Google Repository form your sdk manager and than restart Android Studio. share | improve this answer | follow ...
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How to append contents of multiple files into one file

...'re definitely heading in the right direction. Bash certainly accepts the form {...} for filename matching, so perhaps the quotes messed things up a bit in your script? I always try working with things like this using ls in a shell. When I get the command right, I just cut-n-paste it into a scrip...
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Bootstrap Dropdown menu is not working

... I faced this while I was using ASP .NET Forms. The solution I used was deleting or commenting out jQuery and Bootstrap references from the <asp:ScriptManager runat="server"> in the master page. It seems it creates a conflict with the jQuery and Bootstrap refe...