Dear Monks i need your help again.

I have some code (not my) that use g and o matching modifiers. I think there is no need in them but this code show strange result. It ran faster than without this modifiers.

Can you explain why?

Here is code:

#!/usr/bin/perl -W

use warnings;
use strict;
use Benchmark;

my $phrase1 = 'network';
my $phrase2 = 'networK';
my ($t1, $t2);

##########################################
$t1 = new Benchmark;

for (1..10000000) {
    if ($phrase1 =~ /^network$/go) {}
}

$t2 = new Benchmark;

print timestr (timediff ($t2, $t1)), "\n";

##########################################
$t1 = new Benchmark;

for (1..10000000) {
    if ($phrase2 =~ /^networK$/) {}
}
$t2 = new Benchmark;

print timestr (timediff ($t2, $t1)), "\n";

[download]

And here is result:

7 wallclock secs ( 6.40 usr +  0.01 sys =  6.41 CPU)
9 wallclock secs ( 9.06 usr +  0.00 sys =  9.06 CPU)

[download]

In reply to Why this code run faster? by Gangabass

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