[ILUG] Silly perl question

[Jimmy O'Regan]

2008/8/28 Braun Brelin <bbrelin at gmail.com>:
> Doesn't use strict require that all variables be declared before they are
> used regardless of whether they're global or local?
>

Ah... It's more subtle than that:

'Because of their special use by sort(), the variables $a and $b are
exempted from this check.'