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Counting the occurrences / frequency of array elements
... third-party for-loop, but I sort of ignored that since the standard index-based for-loops are sadly the default.
– ninjagecko
May 25 '11 at 18:51
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Replace one substring for another string in shell script
...or the relevant POSIX documentation, see The Open Group Technical Standard Base Specifications, Issue 7, the Shell & Utilities volume, §2.6.2 "Parameter Expansion".
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Best PHP IDE for Mac? (Preferably free!) [closed]
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Free! Plus, the best functionality of all offerings. Includes inline database connections, code completion, syntax checking, color coding, split views etc. Downside: It's a memory hog on the Mac. Be prepared to allow half a gig of memory then you'll need to shut down and restart.
Komodo
A step ...
Best way to test for a variable's existence in PHP; isset() is clearly broken
..., encapsulation and polymorphism are key properties of objects; in a class-based OOP implementation like PHP's, the encapsulated properties are declared as part of the class definition, and given access levels (public, protected, or private).
However, PHP also allows you to dynamically add propert...
How to extract custom header value in Web API message handler?
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To expand on Youssef's answer, I wrote this method based Drew's concerns about the header not existing, because I ran into this situation during unit testing.
private T GetFirstHeaderValueOrDefault<T>(string headerKey,
Func<HttpRequestMessage, string> default...
What does the exclamation mark do before the function?
...le. Now, add console.debug("foo:",foo); -- you get very different results based on what symbol you use. ! forces a return value which isn't always desirable. I prefer the ({})() syntax for clarity and accuracy.
– Carnix
Oct 2 '13 at 20:28
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How do I remove/delete a virtualenv?
...u are using. virtualenv, venv, Anaconda environment, pyenv, pipenv are all based the same principle here.
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Get program execution time in the shell
... Bash calculate automaticly special variable $SECONDS , then recalculation based on external date command is unneeded. $SECONDS variable keeps how many seconds bash script is running when it starts. This variable has some special property. See man page :D
– Znik
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SQL set values of one column equal to values of another column in the same table
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
...r if you are using rvm (ideal when needing to go back and support old code bases!): rvm rubygems 1.5.3
– tardate
Oct 3 '11 at 23:59
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