#! /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;
}
Results:
Benchmark: timing 10000000 iterations of Mine, Yours...
Mine: 9 wallclock secs ( 8.82 usr + 0.02 sys = 8.84 CPU) @ 11
+31221.72/s (n=10000000)
Yours: 25 wallclock secs (21.95 usr + 0.04 sys = 21.99 CPU) @ 45
+4752.16/s (n=10000000)
Rate Yours Mine
Yours 454752/s -- -60%
Mine 1131222/s 149% --
_______________
DamnDirtyApe
Those who know that they are profound strive for clarity. Those who
would like to seem profound to the crowd strive for obscurity.
--Friedrich Nietzsche
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