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Array to Hash Ruby
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a = ["item 1", "item 2", "item 3", "item 4"]
h = Hash[*a] # => { "item 1" => "item 2", "item 3" => "item 4" }
That's it. The * is called the splat operator.
One caveat per @Mike Lewis (in the comments): "Be very careful with this. Ruby expands splats on ...
How to add reference to System.Web.Optimization for MVC-3-converted-to-4 app
...e new bundling feature in a project I recently converted from MVC 3 to MVC 4 beta. It requires a line of code in global.asax, BundleTable.Bundles.RegisterTemplateBundles(); , which requires using System.Web.Optimization; at the top.
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Browse the files created on a device by the iOS application I'm developing, on workstation?
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Abhishek Bedi
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answered May 25 '11 at 8:35
Amy WorrallAmy Worral...
How do I find the .NET version?
... or else if you have the .NET framework SDK, then the SDK Command prompt.
4. wmic product get description | findstr /C:".NET Framework"
5. dir /b /ad /o-n %systemroot%\Microsoft.NET\Framework\v?.*
The last command (5) will list out all the versions (except 4.5) of .NET installed, latest first. Yo...
Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
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Edits (@CraigRinger): Note that installing VS 2010 SP1 will remove the 64-bit compilers. You need to install the VS 2010 SP1 compiler pack to get them back.
This affects Microsoft Windows SDK 7.1 for Windows 7 and .NET 4.0 as well as Visual Studio 2010.
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How to count the number of set bits in a 32-bit integer?
...33333) + ((i >> 2) & 0x33333333);
return (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
}
For JavaScript: coerce to integer with |0 for performance: change the first line to i = (i|0) - ((i >> 1) & 0x55555555);
This has the best worst-case behaviour of ...
How do I iterate over a range of numbers defined by variables in Bash?
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edited Apr 23 '16 at 0:41
answered Oct 4 '08 at 1:41
Jia...
Reimport a module in python while interactive
... new version without leaving the Python interpreter.
If running Python 3.4 and up, do import importlib, then do importlib.reload(nameOfModule).
Don't forget the caveats of using this method:
When a module is reloaded, its dictionary (containing the module’s global variables) is retained. Red...
How would you implement an LRU cache in Java?
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answered Dec 23 '09 at 15:43
Hank GayHank Gay
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