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Getting a random value from a JavaScript array
...s to performance optimization while producing output using UI elements, ~~ wins the game. MORE INFO
var rand = myArray[~~(Math.random() * myArray.length)];
But if you know that the array is going to have millions of elements than you might want to reconsider between Bitwise Operator and Math.Floor(...
Indentation shortcuts in Visual Studio
...aligned vertically for it to be any use. This is one area where RAD Studio wins hands down.
– David Heffernan
Jan 26 '12 at 9:17
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Overriding a Rails default_scope
...rder('created_at desc')
end
Foo.reorder('created_at asc')
runs the following SQL:
SELECT * FROM "foos" ORDER BY created_at asc
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Could not load file or assembly 'System.Data.SQLite'
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I'm running windows 7, and I hit this issue; turning 32-bit on fixed it for me, presumably because my copy of the DLL was 32-bit.
– Doug
Jul 12 '11 at 3:41
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Determine which MySQL configuration file is being used
...-help | grep -A 1 "Default options"
Default options are read from the following files in the given order:
/etc/mysql/my.cnf ~/.my.cnf /usr/etc/my.cnf
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Install an apk file from command prompt?
I want to install a file using the Windows command line. First I want to build after compiling all the .jar files to create an .apk file for an Android application without using Eclipse.
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Load image from resources area of project in C#
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Are you using Windows Forms? If you've added the image using the Properties/Resources UI, you get access to the image from generated code, so you can simply do this:
var bmp = new Bitmap(WindowsFormsApplication1.Properties.Resources.myima...
Changing website favicon dynamically
...d here). Here is a different demo of code that works in IE11 too. The following example might not work in Safari or Internet Explorer.
/*!
* Dynamically changing favicons with JavaScript
* Works in all A-grade browsers except Safari and Internet Explorer
* Demo: http://mathiasbynens.be/demo/dyna...
How best to include other scripts?
... (And a nice warning about the script not being able to find dependencies) wins.
– Aaron H.
Oct 29 '10 at 16:54
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Eclipse says: “Workspace in use or cannot be created, chose a different one.” How do I unlock a work
...at eclipse was looking at the previous "real" location, as opposed to following the symlink, and this was causing the errors.
In my case, I just moved the workspace back to its old location.
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