method
hex
v2_5_5 -
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- Class:
Random::Formatter
hex(n=nil)public
SecureRandom.hex generates a random hexadecimal string.
The argument n specifies the length, in bytes, of the random number to be generated. The length of the resulting hexadecimal string is twice of n.
If n is not specified or is nil, 16 is assumed. It may be larger in the future.
The result may contain 0-9 and a-f.
p SecureRandom.hex #=> "eb693ec8252cd630102fd0d0fb7c3485" p SecureRandom.hex #=> "91dc3bfb4de5b11d029d376634589b61"
If a secure random number generator is not available, NotImplementedError is raised.