I have a similar situation and my choice was $unique = int rand 1000000000 Not guaranteed 100% unique, but I'm prepared to bet on it. The more zeroes, the closer to true uniqueness! n.b. I'm pretty much making this up as I go, so this is almost certainly not the canonical solution: but it has the merits that it is simple and one knows how it works.

§ George Sherston

In reply to Re: Unique Sequence by George_Sherston
in thread Unique Sequence by Anonymous Monk

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