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What does the “-U” option stand for in pip install -U

...find any docs for pip's command line options/arguments. What does pip install -U mean? Does anyone have a link to a list of pip's options and arguments? ...
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How can I get a list of build targets in Ant?

... the available built targets without having to search through the file manually. Does ant have a command for this - something like ant show-targets - that will make it list all the targets in the build file? ...
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Is there a CSS not equals selector?

... In CSS3, you can use the :not() filter, but not all browsers fully support CSS3 yet, so be sure you know what you're doing which is now supported by all major browsers (and has been for quite some time; this is an old answer...). Example: <input type="text" value="wi...
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Efficiently replace all accented characters in a string?

... I can't speak to what you are trying to do specifically with the function itself, but if you don't like the regex being built every time, here are two solutions and some caveats about each. Here is one way to do this: function makeSortString(s) { if(!makeSortString.transl...
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Set attribute without value

... answered Oct 31 '12 at 13:37 Callum McLeanCallum McLean 1,20177 silver badges1212 bronze badges ...
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How can I check if a file exists in Perl?

...mething exists at given path using the -e file-test operator. print "$base_path exists!\n" if -e $base_path; However, this test is probably broader than you intend. The code above will generate output if a plain file exists at that path, but it will also fire for a directory, a named pipe, a syml...
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Numpy: Get random set of rows from 2D array

...st, but this is what works best for me: A[np.random.choice(A.shape[0], num_rows_2_sample, replace=False)] change the replace=False to True to get the same thing, but with replacement. share | im...
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Best way to organize jQuery/JavaScript code (2013) [closed]

...not up to date. I have over 2000 lines of code in a single file, and as we all know this is bad practice, especially when i'm looking through code or adding new features. I want to better organize my code, for now and for the future. ...
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Where to use EJB 3.1 and CDI?

... together. EJB >= CDI Note that EJBs are CDI beans and therefore have all the benefits of CDI. The reverse is not true (yet). So definitely don't get into the habit of thinking "EJB vs CDI" as that logic really translates to "EJB+CDI vs CDI", which is an odd equation. In future versions of J...
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How do I copy directories recursively with gulp?

...c( [ files ], { "base" : "." }) can be used in the structure above to copy all the directories recursively. If, like me, you may forget this then try: gulp.copy=function(src,dest){ return gulp.src(src, {base:"."}) .pipe(gulp.dest(dest)); }; ...