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Re: Possible pitfall with Slices

by Fastolfe (Vicar)
on Nov 07, 2000 at 00:59 UTC ( #40240=note: print w/ replies, xml ) Need Help??

in reply to Possible pitfall with Slices

A better way of doing this:

@a{qw{ a b c }} = (); # not (1)x3 or whatever foreach (qw{ a b c }) { print "$_\n" if exists $a{$_}; }
Thus we don't have to worry about being sure the values of the hash are all present and what-not. Specify an empty list on the right-hand-side to set the values all to undef, and just use exists to see if it's there. It's also slightly faster (but not much).

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