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How do I check if a string is a number (float)?

... Which, not only is ugly and slow I'd dispute both. A regex or other string parsing method would be uglier and slower. I'm not sure that anything much could be faster than the above. It calls the function and returns. Try/Catch doesn't introd...
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Should composer.lock be committed to version control?

... specific versions of the libs you are using. If you commit your changes, and someone pulls your code and updates the dependencies, the lockfile should be unmodified. If it is modified, it means that you have a new version of something. Having it in the repository assures you that each developer i...
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Explanation of JSONB introduced by PostgreSQL

PostgreSQL just introduced JSONB and it's already trending on hacker news . It would be great if someone could explain how it's different from Hstore and JSON previously present in PostgreSQL. What are its advantages and limitations and when should someone consider using it? ...
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Tags for Emacs: Relationship between etags, ebrowse, cscope, GNU Global and exuberant ctags

I work on C++ projects, and I went through Alex Ott's guide to CEDET and other threads about tags in StackOverflow, but I am still confused about how Emacs interfaces with these different tag systems to facilitate autocompletion, the looking up of definitions, navigation of source code base or the...
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Why is there no xrange function in Python3?

Recently I started using Python3 and it's lack of xrange hurts. 6 Answers 6 ...
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?

... Uploaded my proposal at github (Is working with all android versions though view hardware acceleration is strongly recommended for this kind of animations. For non hardware accelerated devices a bitmap caching implementation should fit better) Demo video with the animation is...
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Difference between Mock / Stub / Spy in Spock test framework

I don't understand the difference between Mock, Stub, and Spy in Spock testing and the tutorials I have been looking at online don't explain them in detail. ...
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How to get unique values in an array

...hat uses no libraries. This requires two new prototype functions, contains and unique Array.prototype.contains = function(v) { for (var i = 0; i < this.length; i++) { if (this[i] === v) return true; } return false; }; Array.prototype.unique = function() { var arr = []; ...
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Android: how to handle button click

Having a solid experience in non-Java and non-Android area, I'm learning Android. 10 Answers ...
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Hidden features of mod_rewrite

...of it work. As a result I've compiled a few notes on common functionality, and perhaps a few annoying nuances. 8 Answers ...