Re: Sorting a hash. What am I doing wrong?

Its name suggests that @uniq should be filled like this:

my @uniq = sort { $a <=> $b }
           grep { $seen{$_} == 1 } keys %seen;
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In other words: get the keys that occur only once and sort them numerically.

— Arien

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Re: Re: Sorting a hash. What am I doing wrong? by zakb (Pilgrim) on Jan 14, 2003 at 16:19 UTC
A hash's keys are always unique. `#!/usr/bin/perl -w use strict; my %hash = ( key1 => '1', key1 => '2' ); print join("\n", keys %hash);` [download] prints 'key1' only...	[reply] [d/l]