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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 2 ...
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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". share | improve this answer ...
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How to drop multiple columns in postgresql

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What are all the different ways to create an object in Java?

...isation (uses the no-args constructor of the most derived non-serialisable base class). Through Object.clone (does not call a constructor). Through JNI (should call a constructor). Through any other method that calls a new for you. I guess you could describe class loading as creating new objects (su...
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How do I delete/remove a shell function?

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How to check if a file exists in Documents folder?

...ist. NSFileManager Class Reference Note: Attempting to predicate behavior based on the current state of the file system or a particular file on the file system is not recommended. Doing so can cause odd behavior or race conditions. It's far better to attempt an operation (such as loading a file or ...
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jQuery ID starts with

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How to extract custom header value in Web API message handler?

... 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...
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How to break out of a loop in Bash?

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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 ...