From: Aaron Smith <beingthexemplary@...>
Date: 2007-03-09T10:38:10+09:00
Subject: Re: generate UUID

Eden Li wrote:
> He probably meant to_s(16), not to_a(16).  Anyway, rand_hex_2 won't
> zero-pad, so you might want to replace the to_s with a format
> operator:
> 
> def rand_hex_3(l)
>   "%0#{n}x" % rand(1 << n*4)
> end
> 
> def rand_uuid
>   [8,4,4,4,12].map {|n| rand_hex_3(n)}.join('-')
> end
> 
> puts rand_uuid

cool, thanks. just to clarify. couple variable names needed changing

def rand_hex_3(l)
  "%0#{l}x" % rand(1 << l*4)
end

def rand_uuid
  [8,4,4,4,12].map {|n| rand_hex_3(n)}.join('-')
end

puts rand_uuid

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