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Hidden features of Perl?

... There are many non-obvious features in Perl. For example, did you know that there can be a space after a sigil? $ perl -wle 'my $x = 3; print $ x' 3 Or that you can give subs numeric names if you use symbolic references? $ perl -lwe '*4 = sub { print "yes" }; 4->()' yes There's a...
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How to print time in format: 2009‐08‐10 18:17:54.811

... It's an even better answer now, and props for looking up how to handle the millisecond part. I think your buffer is now a little longer than it needs to be, though. – Jack Kelly Sep 9 '10 at 3:56 ...
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Why is January month 0 in Java Calendar?

...ng what's wrong with it would take a very long time (and I'm sure I don't know half of the problems). Admittedly working with dates and times is tricky, but aaargh anyway. Do yourself a favour and use Joda Time instead, or possibly JSR-310. EDIT: As for the reasons why - as noted in other answers,...
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Testing modules in rspec

...ules in rspec? I have some modules that get included in few models and for now I simply have duplicate tests for each model (with few differences). Is there a way to DRY it up? ...
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How do I add 24 hours to a unix timestamp in php?

I would like to add 24 hours to the timestamp for now. How do I find the unix timestamp number for 24 hours so I can add it to the timestamp for right now? ...
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Loading Backbone and Underscore using RequireJS

... RequireJS 2.X now organically addresses non-AMD modules such as Backbone & Underscore much better, using the new shim configuration. The shim configuration is simple to use: (1) one states the dependencies (deps), if any, (which may...
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How to define custom configuration variables in rails

... Update 1 Very recommended: I'm going with Rails Config gem nowadays for the fine grained control it provides. Update2 If you want a quick solution, then check Jack Pratt's answer below. Although my original answer below still works, this answer is now outdated. I recommend looking...
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Do I need dependency injection in NodeJS, or how to deal with …?

... dbCon = require('./lib/mydbconnection'); //wherever the file is stored //now do something with the connection var connection = dbCon.fetchConnection(); //mydbconnection.js is responsible for pooling, reusing, whatever your app use case is //come TEST time of SuperCoolWebApp, you can set the requi...
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How to profile methods in Scala?

...noTime() println("Elapsed time: " + (t1 - t0) + "ns") result } // Now wrap your method calls, for example change this... val result = 1 to 1000 sum // ... into this val result = time { 1 to 1000 sum } share ...
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Browser doesn't scale below 400px?

...to the right instead of to the bottom Resize the inspector panel - you can now make the browser area really small (down to 0px) Update: Chrome now allows you to arrange the inspector windows vertically when docked to the right! This really improves the layout. The HTML and CSS panels fit really...