大约有 13,913 项符合查询结果(耗时:0.0212秒) [XML]

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How to run a process with a timeout in Bash? [duplicate]

Is there a way to write a shell script that would execute a certain command for 15 seconds, then kill the command? 2 Answer...
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Remove all special characters from a string in R?

... You need to use regular expressions to identify the unwanted characters. For the most easily readable code, you want the str_replace_all from the stringr package, though gsub from base R works just as well. The exact regular expression depends upon...
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How to download Xcode DMG or XIP file?

... You can find the DMGs or XIPs for Xcode and other development tools on https://developer.apple.com/download/more/ (requires Apple ID to login). You must login to have a valid session before downloading anything below. *(Newest on top. For each minor ...
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How to put labels over geom_bar for each bar in R with ggplot2

... Try this: ggplot(data=dat, aes(x=Types, y=Number, fill=sample)) + geom_bar(position = 'dodge', stat='identity') + geom_text(aes(label=Number), position=position_dodge(width=0.9), vjust=-0.25) ...
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Pass column name in data.table using variable [duplicate]

In following example, I am creating a data table having column name ‘x’ and ‘v’ 1 Answer ...
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How can we access context of an application in Robolectric?

...tually, I need to get a response of an API call, for that I required Context . 14 Answers ...
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Select Pandas rows based on list index

... List = [1, 3] df.ix[List] should do the trick! When I index with data frames I always use the .ix() method. Its so much easier and more flexible... UPDATE This is no longer the accepted method for indexing. The ix method is deprecated. Use...
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Find and replace Android studio

... the shortcut that you're looking for is: Ctrl+Shift+R on Windows and Linux/Ubuntu Cmd+Shift+R on Mac OS X ref: source share | improve this answer | follow ...
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Specialization with Constraints

...ng GHC to specialize a function with a class constraint. I have a minimal example of my problem here: Foo.hs and Main.hs . The two files compile (GHC 7.6.2, ghc -O3 Main ) and run. ...
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numpy matrix vector multiplication [duplicate]

When I multiply two numpy arrays of sizes (n x n)*(n x 1), I get a matrix of size (n x n). Following normal matrix multiplication rules, a (n x 1) vector is expected, but I simply cannot find any information about how this is done in Python's Numpy module. ...