Pretty sure about the only way to do it (roughly) is like so: 
for my $k (keys %hash) {
    my $v = delete $hash{$k};
    my $t = transform($k);

    $hash{$t} = $v;
}

[download]

UPDATE: woops. (probably a /msg would have done the trick?)
UPDATE: no, no offense at all.

-Paul

In reply to Re: Using substr on Hash Keys by jettero
in thread Using substr on Hash Keys by pc0019

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