RSpec
Ruby on Rails
Ruby
method
uuid
v1_9_3_125 -
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Class: SecureRandom
- 1_8_6_287
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- 1_8_7_330
- 1_9_1_378
- 1_9_2_180
- 1_9_3_125 (0)
- 1_9_3_392 (0)
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- 2_4_6
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- What's this?
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base64
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bytes
(>= v2_4_6)
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gen_random
(>= v2_2_9)
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gen_random_openssl
(>= v2_5_5)
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gen_random_urandom
(>= v2_5_5)
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hex
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lastWin32ErrorMessage
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random_bytes
-
random_number
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urlsafe_base64
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uuid
= private
= protected
uuid()
public
SecureRandom.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.
See RFC 4122 for details of UUID.
