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How to turn on/off ReactJS 'development mode'?

...me helpers off during production. Just using the minified react will leave all those potential optimizations on the table as well. Ultimately the magic comes down to React embedding references to process.env.NODE_ENV throughout the codebase; these act like a feature toggle. if (process.env.NODE_ENV ...
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Adding git branch on the Bash command prompt

... git 1.9.3 or later: use __git_ps1 Git provides a shell script called git-prompt.sh, which includes a function __git_ps1 that prints text to add to bash PS1 prompt (includes branch name) Its most basic usage is: $ __git_ps1 (master) It also takes an optional format string: $ __g...
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What is the list of supported languages/locales on Android?

...n_LS [English (Lesotho)] en_MG [English (Madagascar)] en_MH [English (Marshall Islands)] en_MO [English (Macau)] en_MP [English (Northern Mariana Islands)] en_MS [English (Montserrat)] en_MT [English (Malta)] en_MU [English (Mauritius)] en_MW [English (Malawi)] en_NA [English (Namibia)] en_NF [Engli...
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Is there a way to make mv create the directory to be moved to if it doesn't exist?

...ectories don't exist, is there some way to have those directories automatically created, so that you would only have to type ...
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How can I see normal print output created during pytest run?

...in the junit report? In UNIX, this is commonly referred to as teeing. Ideally, teeing rather than capturing would be the py.test default. Non-ideally, neither py.test nor any existing third-party py.test plugin (...that I know of, anyway) supports teeing – despite Python trivially supporting tee...
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How to loop through all the properties of a class?

...). You don't need to specify BindingFlags.GetProperty, you use that when calling type.InvokeMember() to get the value of a property. share | improve this answer | follow ...
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How to remove an item from an array in AngularJS scope?

... Your issue is not really with Angular, but with Array methods. The proper way to remove a particularly item from an array is with Array.splice. Also, when using ng-repeat, you have access to the special $index property, which is the current inde...
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Concurrent HashSet in .NET Framework?

...ass. private ConcurrentBag<string> _data; Self-implementation Finally, as you did, you can implement your own data type, using lock or other ways that the .NET provides you to be thread-safe. Here is a great example: How to implement ConcurrentHashSet in .Net The only drawback of this sol...
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What is the purpose of python's inner classes?

...dden from the outside world. More readable, maintainable code: Nesting small classes within top-level classes places the code closer to where it is used. The main advantage is organization. Anything that can be accomplished with inner classes can be accomplished without them. ...
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python generator “send” function purpose?

...t's useful, one of the best use cases I've seen is Twisted's @defer.inlineCallbacks. Essentially it allows you to write a function like this: @defer.inlineCallbacks def doStuff(): result = yield takesTwoSeconds() nextResult = yield takesTenSeconds(result * 10) defer.returnValue(nextResu...