Created
April 26, 2011 16:12
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# http://www.ebisawa.co.jp/wiki/index.php?Perl%2F%E3%82%AA%E3%83%96%E3%82%B8%E3%82%A7%E3%82%AF%E3%83%88%E6%8C%87%E5%90%91 | |
use strict; | |
use Benchmark qw(cmpthese); | |
# use Perl6::Slurp; | |
use File::Slurp; | |
cmpthese( | |
-1, | |
{ | |
"File::Slurp" => sub { | |
my $indexFile = __FILE__; | |
my @array = read_file ( $indexFile, { chomp => 1 } );; | |
}, | |
"mapChomp1" => sub { | |
my $indexFile = __FILE__; | |
my @array; | |
open( my $fh, $indexFile ) || die( "can't open index file: $!" ); | |
map { chomp; push( @array, $_ ); } <$fh>; | |
close $fh; | |
}, | |
"mapChomp2" => sub { | |
my $indexFile = __FILE__; | |
open( my $fh, $indexFile ) || die( "can't open index file: $!" ); | |
my @array = map { chomp; $_; } <$fh>; | |
close $fh; | |
}, | |
"mapChomp3" => sub { | |
my $indexFile = __FILE__; | |
open( my $fh, $indexFile ) || die( "can't open index file: $!" ); | |
my @array = map { local $/; chomp; $_; } <$fh>; | |
close $fh; | |
}, | |
split => sub { | |
my $indexFile = __FILE__; | |
open( my $fh, $indexFile ) || die( "can't open index file: $!" ); | |
my @array = split /\n/, do { local $/; <$fh> }; | |
close $fh; | |
}, | |
} | |
); | |
__END__ | |
daisuke@beefcake ~$ perl read.pl | |
Rate File::Slurp mapChomp3 mapChomp2 mapChomp1 split | |
File::Slurp 5023/s -- -31% -53% -65% -70% | |
mapChomp3 7319/s 46% -- -31% -49% -56% | |
mapChomp2 10676/s 113% 46% -- -26% -36% | |
mapChomp1 14354/s 186% 96% 34% -- -14% | |
split 16747/s 233% 129% 57% 17% -- |
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