my $uuid = sprintf('%08X-%04X-%04X-%04X-%04X%08X',
   unpack 'V v v n nN', pack 'H*', $_);

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Not that unreadable (relatively speaking). With 'n' and 'v', the size of the letter (lc vs uc) indicates the size of the field (16 vs 32 bit). 'n' keep order, 'v' reverses it.

In reply to Re: Rearrange hex digits. by ikegami
in thread Rearrange hex digits. by kyle

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