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Why do people say that Ruby is slow? [closed]

I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. ...
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Different bash prompt for different vi editing mode?

...e-in-prompt on into /etc/inputrc or ~/.inputrc (thx stooj) should affect all your readline-enabled programs ;) share | improve this answer | follow | ...
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AngularJS: Basic example to use authentication in Single Page Application

... I've created a github repo summing up this article basically: https://medium.com/opinionated-angularjs/techniques-for-authentication-in-angularjs-applications-7bbf0346acec ng-login Github repo Plunker I'll try to explain as good as possible, hope I help some of you out there: ...
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What is a NullReferenceException, and how do I fix it?

.... This means you either set it to null, or you never set it to anything at all. Like anything else, null gets passed around. If it is null in method "A", it could be that method "B" passed a null to method "A". null can have different meanings: Object variables which are uninitialized and hence poi...
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Build Eclipse Java Project from Command Line

...ore.aptBuild It uses the jdt apt plugin to build your workspace automatically. This is also known as a 'Headless Build'. Damn hard to figure out. If you're not using a win32 exe, you can try this: java -cp startup.jar -noSplash -data "D:\Source\MyProject\workspace" -application org.eclipse.jdt....
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GCC compile error with >2 GB of code

...inv2 - 32*s.x12pow2*s.x15*s.x35*s.x45*s.mWpowinv2 -... right? If all your functions have a similar "format" (multiply n numbers m times and add the results - or something similar) then I think you can do this: change the generator program to output offsets instead of strings (i.e. instea...
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Tools to selectively Copy HTML+CSS+JS From A Specific Element of DOM [closed]

Like most web developers, I occasionally like to look at the source of websites to see how their markup is built. Tools like Firebug and Chrome Developer Tools make it easy to inspect the code, but if I want to copy a specific section and play around with it locally, it would be a pain to copy all t...
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable

...uld be noticeable impact. Enumerable.Empty does not create an object per call thus putting less load on GC. If the code is in low-throughput location, then it boils down to aesthetic considerations though. share |...
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What is the function __construct used for?

... | edited Jan 10 '17 at 7:24 piet.t 10.7k77 gold badges3939 silver badges4949 bronze badges ...
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Restoring MySQL database from physical files

...mysql data directory is quick and easy, but figuring out, before that, why all my resoterd DBs seemed to have no tables took a bit longer. – Edurne Pascual Sep 26 '12 at 15:41 10 ...