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What does !! mean in ruby?
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161
Not not. It's used to convert a value to a boolean:
!!nil #=> false
!!"abc" #=> true...
Python 3: ImportError “No Module named Setuptools”
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Soham Dongargaonkar
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answered Jan 20 '13 at 16:27
tiagotiago
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How to set an environment variable only for the duration of the script?
On Linux (Ubuntu 11.04) in bash, is it possible to temporarily set an environment variable that will only be different from the normal variable for the duration of the script? For example, in a shell script, making an app that saves to HOME portable by temporarily setting HOME to a folder in the pre...
How to automatically navigate to the current class in Intellij Idea Project Tool Window?
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216
Navigate (View in older versions)| Select In... (Alt+F1), Project View (Enter).
It's also poss...
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
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149
This cannot be typed to Exception because it's possible to throw objects in .Net that do not d...
Download JSON object as a file from browser
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How to add a second css class with a conditional value in razor MVC 4
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answered Mar 29 '13 at 10:01
von v.von v.
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Importing a Swift protocol in Objective-C class
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answered Jun 6 '14 at 12:14
Jamie ForrestJamie Forrest
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