use strict; use Data::Dumper; my @allrefs; my %uni_refs = ( qw [ a 1 b 2 c 3 ] ); print Dumper \%uni_refs; my @refs = @allrefs[ sort {$a <=> $b} values %uni_refs ]; print Dumper \@allrefs; print Dumper \@refs; #### $VAR1 = { 'c' => '3', 'a' => '1', 'b' => '2' }; $VAR1 = []; $VAR1 = [ undef, undef, undef ];