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How do I change tab size in Vim?

Every time I add a selector in CSS and I press Enter to define the properties it ends up like this: 6 Answers ...
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PHP code is not being executed, instead code shows on the page

...on, here are a few things you can check: Make sure that PHP is installed and running correctly. This may sound silly, but you never know. An easy way to check is to run php -v from a command line and see if returns version information or any errors. Make sure that the PHP module is listed and unco...
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Get a list of checked checkboxes in a div using jQuery

... and another combo: var selected = $('#checkboxes input:checked').map(function(i,el){return el.name;}).get(); // add .join(';') to get a combined string – roberkules Dec 2 '11 at 0:08 ...
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What are the security risks of setting Access-Control-Allow-Origin?

...n. This basically means that any site can send an XHR request to your site and access the server’s response which would not be the case if you hadn’t implemented this CORS response. So any site can make a request to your site on behalf of their visitors and process its response. If you have som...
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Allow User to input HTML in ASP.NET MVC - ValidateInput or AllowHtml

.../de-de/magazine/hh708755.aspx) says, that you shouldn't use ValidateInpute and take AllowHtmlAttribute instead. (Did'nt found the English version) – Alexander Schmidt Feb 2 '12 at 11:26 ...
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Match everything except for specified strings

...en or blue anywhere in it. For that, anchor the regular expression with ^ and include .* in the negative lookahead: ^(?!.*(red|green|blue)) Also, suppose that you want lines containing the word "engine" but without any of those colors: ^(?!.*(red|green|blue)).*engine You might think you can f...
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How do I implement an Objective-C singleton that is compatible with ARC?

How do I convert (or create) a singleton class that compiles and behaves correctly when using automatic reference counting (ARC) in Xcode 4.2? ...
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How to add percent sign to NSString

...e for percent sign in NSString format is %%. This is also true for NSLog() and printf() formats. share | improve this answer | follow | ...
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jQuery UI accordion that keeps multiple sections open?

...doesn't allow more than one content panel to be open at the same time, and it takes a lot of effort to do that. If you are looking for a widget that allows more than one content panel to be open, don't use this. Usually it can be written with a few lines of jQuery instead, something ...
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Unix command to find lines common in two files

I'm sure I once found a unix command which could print the common lines from two or more files, does anyone know its name? It was much simpler than diff . ...