Using Perl6::Junction works fine too: 
#!/usr/bin/perl

use strict;
use warnings;

use Perl6::Junction qw/none/;
use Data::Dumper;

my %colors = ( red => '#ff0000', blue => '#0000ff', 
               green => '#00ff00', yellow => '#ffff00', );

my @sel_col = qw/ red green /;

print Dumper [grep {none(@sel_col) eq $_} keys %colors];

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In reply to Re: stuck in a hash by neniro
in thread stuck in a hash by Anonymous Monk

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