Re: Explanation requested regarding negation of characters classes in perlretut

by dimar (Curate)

on May 29, 2004 at 01:10 UTC ( [id://357392]=note: print w/replies, xml )

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Think DeMorgan's laws:

### ( (! $a) && (! $b) )
[download]

.. is the same thing as ...

### (! ( $a || $b) )
[download]

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