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Benchmark: timing 100000 iterations of caf, cafr, cal, os, otrw...
caf:  4 wallclock secs ( 5.09 usr +  0.00 sys =  5.09 CPU) @ 19661.82/s (n=100000)
cafr:  5 wallclock secs ( 4.63 usr +  0.00 sys =  4.63 CPU) @ 21584.29/s (n=100000)
cal:  4 wallclock secs ( 3.51 usr +  0.00 sys =  3.51 CPU) @ 28490.03/s (n=100000)
os:  3 wallclock secs ( 3.71 usr +  0.00 sys =  3.71 CPU) @ 26932.40/s (n=100000)
otrw:  3 wallclock secs ( 3.67 usr +  0.00 sys =  3.67 CPU) @ 27277.69/s (n=100000)
Rate  caf cafr   os otrw  cal
caf  19662/s   --  -9% -27% -28% -31%
cafr 21584/s  10%   -- -20% -21% -24%
os   26932/s  37%  25%   --  -1%  -5%
otrw 27278/s  39%  26%   1%   --  -4%
cal  28490/s  45%  32%   6%   4%   --

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# ｕｔｆ８
use 5.8.1;
use strict;
use warnings;
use utf8;
package Bench::CAF;
use base qw(Class::Accessor::Fast);
__PACKAGE__->mk_accessors(qw(foo hoge));
package Bench::CAFr;
use base qw(Class::Accessor::Faster);
__PACKAGE__->mk_accessors(qw(foo hoge));
package Bench::CAL;
use Class::Accessor::Lite;
Class::Accessor::Lite->mk_accessors(qw(foo hoge));
sub new { bless {}, $_[0] }
package Bench::OTRW;
use Object::Tiny::RW qw(foo hoge);
package Bench::OS;
use base qw/Object::Simple/;
__PACKAGE__->attr("foo");
__PACKAGE__->attr("hoge");
package main;
use Benchmark qw(:all);
use Perl6::Say;
# use Data::Dumper;
sub confirm {
#    say @_;
}
cmpthese(timethese( 100_000,
{
# Class::Accessor::Fast
caf => sub {
my $ac = Bench::CAF->new;
confirm($ac->foo("bar"));
confirm($ac->foo);
confirm($ac->hoge("fuga"));
},
# Class::Accessor::Faster
cafr => sub {
my $ac = Bench::CAFr->new;
confirm($ac->foo("bar"));
confirm($ac->foo);
confirm($ac->hoge("fuga"));
},
# Class::Accessor::Lite
cal => sub {
my $ac = Bench::CAL->new;
confirm($ac->foo("bar"));
confirm($ac->foo);
confirm($ac->hoge("fuga"));
},
# Object::Tiny
otrw => sub {
my $ac = Bench::OTRW->new;
confirm($ac->foo("bar"));
confirm($ac->foo);
confirm($ac->hoge("fuga"));
},
# Object::Simple
os => sub {
my $ac = Bench::OS->new;
confirm($ac->foo("bar"));
confirm($ac->foo);
confirm($ac->hoge("fuga"));
},
}));