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lgmkr/gist:5357725

Created April 10, 2013 19:32
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generate UUID in ruby
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gistfile1.txt
::uuid generates a v4 random UUID (Universally Unique IDentifier).
p SecureRandom.uuid #=> "2d931510-d99f-494a-8c67-87feb05e1594"
p SecureRandom.uuid #=> "bad85eb9-0713-4da7-8d36-07a8e4b00eab"
p SecureRandom.uuid #=> "62936e70-1815-439b-bf89-8492855a7e6b"
The version 4 UUID is purely random (except the version). It doesn’t contain meaningful information such as MAC address, time, etc.
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