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( [id://3333]=superdoc: print w/replies, xml ) Need Help??

Just fyi:

use strict; use warnings; use Tie::CharArray; use Benchmark qw/cmpthese/; my $string = join '', 'A' .. 'Y'; sub _unpack { my @arr = unpack '(A5)*', $string; } sub _regex { my @arr = $string =~ /.{5}/g; } sub _split { my @arr = split /.{5}\K/, $string; } sub _substr { my @arr; for ( my $i = 0 ; $i < length $string ; $i += 5 ) { push @arr, substr $string, $i, 5; } } sub _open { my @arr; open my $sh, '<', \$string; while ( read $sh, my $chars, 5 ) { push @arr, $chars; } } cmpthese( -5, { _unpack => sub { _unpack() }, _regex => sub { _regex() }, _split => sub { _split() }, _substr => sub { _substr() }, _open => sub { _open() } } );

Output:

Rate _open _regex _substr _split _unpack _open 265986/s -- -53% -55% -57% -70% _regex 563780/s 112% -- -5% -8% -36% _substr 593788/s 123% 5% -- -3% -33% _split 612001/s 130% 9% 3% -- -31% _unpack 881949/s 232% 56% 49% 44% --

In reply to Re: Performance problems on splitting long strings by Kenosis
in thread Performance problems on splitting long strings by Laurent_R

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