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Re: Finding a hash key from the value (reverse lookup)

by davorg (Chancellor)
on Jan 22, 2001 at 19:03 UTC ( #53498=note: print w/replies, xml ) Need Help??

in reply to Finding a hash key from the value (reverse lookup)

The reverse method only works if your values are unique. If they are and you will be doing a lot of reverse lookups then it's worth building a reverse lookup hash. This is far simpler than it sounds:

my %rev_hash = reverse %hash;

"Perl makes the fun jobs fun
and the boring jobs bearable" - me

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