sub variation3ep {
my $idx = -1;
my %hash = map(($_ => ++$idx), @array);
}
####
#!/usr/bin/env perl
use strict;
use warnings;
use Benchmark qw(:all);
my @array='aa' .. 'zz';
sub variation4 {
my $idx = 0;
my %hash; $hash{ $_ } = $idx++ for @array;
}
sub variation5 {
my $idx = 0;
my %hash;
for (@array) {
$hash{ $_ } = $idx++;
}
}
cmpthese(-3, {
'variation4' => \&variation4,
'variation5' => \&variation5,
});
__END__
Rate variation5 variation4
variation5 740/s -- -4%
variation4 773/s 5% --
##
##
sub variation6 {
my $idx = -1;
my %hash; $hash{ $_ } = ++$idx for @array;
}