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Using getopts to process long and short command line options

...or using the bash builtin getopts to mimic long options. That solution actually makes a short option whose character is "-". So you get "--" as the flag. Then anything following that becomes OPTARG, and you test the OPTARG with a nested case. This is clever, but it comes with caveats: getopts ca...
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Git: Discard all changes on a diverged local branch

...tting the branch, on the other hand not only preserves the reflog, but actually records the reset in the reflog. This makes the operation easily reversible later, if needed. – Dan Moulding Mar 30 '11 at 22:36 ...
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Why should I use IHttpActionResult instead of HttpResponseMessage?

...which your controller should inherit from, and therefore is just a method call. So no new keyword is needed there. You probably aren't inheriting from ApiController or you are inside a static method. ResponseMessageResult is the return type of ResponseMessage(). – AaronLS ...
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You have already activated X, but your Gemfile requires Y

... Using bundle exec is the right way to do this. Basically what's happening is that you've updated rake to 0.9.2 which now conflicts with the version specified in your Gemfile. Previously the latest version of rake you had matched the version in your Gemfile, so you didn't get a...
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Javascript array search and remove string?

... I'm actually updating this thread with a more recent 1-line solution: let arr = ['A', 'B', 'C']; arr = arr.filter(e => e !== 'B'); // will return ['A', 'C'] The idea is basically to filter the array by selecting all elements d...
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EC2 Instance Cloning

Is it possible to clone a EC2 instance data and all? 7 Answers 7 ...
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Matching a space in regex

...X is the physical tab character (and each is preceded by a single space in all those examples). These will work in every* regex engine I've ever seen (some of which don't even have the one-or-more "+" character, ugh). If you know you'll be using one of the more modern regex engines, "\s" and its v...
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How can I calculate an md5 checksum of a directory?

I need to calculate a summary md5 checksum for all files of a particular type ( *.py for example) placed under a directory and all sub-directories. ...
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In-Place Radix Sort

... general, but it should be fast. Edit: I got curious whether this code actually works, so I tested/debugged it while waiting for my own bioinformatics code to run. The version above now is actually tested and works. For 10 million sequences of 5 bases each, it's about 3x faster than an optimized i...
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iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]

... All apps will continue to work in the vertically stretched screen from what I could tell in today's presentation. They will be letterboxed or basically the extra 88 points in height would simply be black. If you only plan to...