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Determine if a function exists in bash

Currently I'm doing some unit tests which are executed from bash. Unit tests are initialized, executed and cleaned up in a bash script. This script usualy contains an init(), execute() and cleanup() functions. But they are not mandatory. I'd like to test if they are or are not defined. ...
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How to find first element of array matching a boolean condition in JavaScript?

...somewhere like Stack Overflow. Lots of people will copy and paste the code from here into a utility function, and some of them will, at some point, end up using that utility function in a context where performance matters without thinking about the implementation. If you've given them something that...
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How do I see the commit differences between branches in git?

... If commits have been cherry-picked from branch-X to master this won't filter them out. They will still be on the list of commits "In branch-X but not on master" even though they are actually in both.. – Tuffwer Dec 12 '1...
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What do two question marks together mean in C#?

...or unless you know what it's called! :-) EDIT: And this is a cool feature from another question. You can chain them. Hidden Features of C#? share | improve this answer | f...
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How do I use su to execute the rest of the bash script as that user?

...y case (I just wanted to drop root privileges and do the rest of my script from restricted user): you can make the script restart itself from correct user. Let's suppose it is run as root initially. Then it will look like this: #!/bin/bash if [ $UID -eq 0 ]; then user=$1 dir=$2 shift 2 # ...
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How to show math equations in general github's markdown(not github's blog)

... to find a website similar to yuml.me which can generate on-the-fly images from by parsing the provided URL querystring. Update I've found some sites providing users with such service: codedogs.com (no longer seems to support embedding) or iTex2Img. You may want to try them out. Of course, others ...
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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?

...}); In both cases you have to iterate over the list and extract the value from each object. Wouldn't it be better to somehow extract the values beforehand so that you don't have to do this in both callbacks individually? Yes! And that's what we can use .pipe() for: deferred.pipe(function(result) { ...
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]

...since Solr aggregation was lacking. The amount of time to serialize to and from XML just absolutely killed performance. For small results sets though, it was perfectly fine. Best documentation I've seen in an open source app Solr advantages: Can be extended. Can hit it directly from a web app,...
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How to upload a project to Github

...n https://github.com/yourusername/your-repo-name.git Upload of project from scratch require git pull origin master. 5) git pull origin master 6) git push origin master share | improve this an...
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Get decimal portion of a number with JavaScript

...e acceptable. To me it isn't... Hence, to solve this challenge I'd refrain from using Math.* or % operations. – Marcel Stör Apr 2 '14 at 14:04 66 ...