#! /usr/bin/perl use strict ; use warnings ; $|++ ; use Benchmark qw( :all ) ; # Construct the test string. our @arr ; for ( 1..100_000 ) { push @arr, "foo, bar, zoot, blarg,\n" } cmpthese( 10_000_000, { 'Mine' => \&mine, 'Yours' => \&yours } ) ; sub mine { local @arr ; return map { split /,\s*|\n/ } @arr ; } sub yours { # Roughly. local @arr ; my @word_list ; while ( @arr ) { chomp; push @word_list, split ", "; } \@word_list; }