#!/usr/local/bin/perl -w
use strict;
use Benchmark;
my $count =500000;
## Method number one
sub One {
my $data = 'for bar baz';
$data = uc $data;
}
## Method number two
sub Two {
my $data = 'for bar baz';
$data =~ tr/a-z/A-Z/;
}
## Method number Three
sub Three {
my $data = 'for bar baz';
$data =~ s/([A-Za-z]+)/uc($1)/ge;
}
## We'll test each one, with simple labels
timethese (
$count,
{'Method One UC' => '&One',
'Method Two TR' => '&Two',
'Method Three s'=> '&Three'
}
);
exit;
####
Benchmark: timing 500000 iterations of Method One UC, Method Three s, Method Two TR...
Method One UC: 1 wallclock secs ( 1.42 usr + 0.00 sys = 1.42 CPU) @ 352112.68/s (n=500000)
Method Three s: 16 wallclock secs (17.03 usr + 0.00 sys = 17.03 CPU) @ 29359.95/s (n=500000)
Method Two TR: 1 wallclock secs ( 2.04 usr + 0.00 sys = 2.04 CPU) @ 245098.04/s (n=500000)
##
##
my $data = 'for-bar-baz';
$data =~ s/-/_/g;
print $data;
my $data = 'for-bar-baz';
$data =~tr/-/_/;
print $data;
##
##
Benchmark: timing 500000 iterations of Method One TR, Method Two s...
Method One TR: 2 wallclock secs ( 1.87 usr + 0.00 sys = 1.87 CPU) @ 267379.68/s (n=500000)
Method Two s: 5 wallclock secs ( 4.84 usr + 0.00 sys = 4.84 CPU) @ 103305.79/s (n=500000)