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In Rails - is there a rails method to convert newlines to ?

...mat which does exactly what you are looking for, and slightly better since it also adds paragraph tags. See http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-simple_format Example: simple_format(mystring) Note that simple_format allows basic HTML tags, but also pa...
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How to run multiple shells on Emacs

... C-u M-x shell will do it. It will prompt for a name for the new shell, just hit return for the default (which will be something like *shell*<2>. Also works with eshell. Another trick, if you use eshell: just as M-x eshell takes you back t...
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Why are there two ways to unstage a file in Git?

Sometimes git suggests git rm --cached to unstage a file, sometimes git reset HEAD file . When should I use which? 13 An...
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Regular expressions in an Objective-C Cocoa application

Initial Googling indicates that there's no built-in way to do regular expressions in an Objective-C Cocoa application. 10 A...
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Why not infer template parameter from constructor?

...'t the compiler infer template parameters from class constructors, much as it can do from function parameters? For example, why couldn't the following code be valid: ...
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Pure JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready

With jQuery, we all know the wonderful .ready() function: 10 Answers 10 ...
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Test whether a glob has any matches in bash

If I want to check for the existence of a single file, I can test for it using test -e filename or [ -e filename ] . 19 ...
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How to get the body's content of an iframe in Javascript?

... The exact question is how to do it with pure JavaScript not with jQuery. But I always use the solution that can be found in jQuery's source code. It's just one line of native JavaScript. For me it's the best, easy readable and even afaik the shortest way ...
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Most efficient way to concatenate strings?

...ilder sb = new StringBuilder(); sb.Append(someString); The only problem with String.Join is that you have to concatenate the strings with a common delimiter. Edit: as @ryanversaw pointed out, you can make the delimiter string.Empty. string key = String.Join("_", new String[] { "Customers_Contac...
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PHP abstract properties

...are properties because they are containers of data reserved in memory on initialization. A function on the other hand can be declared (types, name, parameters) without being defined (function body missing) and thus, can be made abstract. "Abstract" only indicates that something was declared but n...