public

tobyink / benchmark-param-validation-practical.pl

Created 2013-05-02

use 5.012;
use Benchmark qw( cmpthese timethese );
use Test::Deep::NoTest;
 
use Scalar::Util qw(looks_like_number);
use Params::Validate qw(SCALAR HASHREF ARRAYREF);
	
my @SIG = (
	{ type => SCALAR, callbacks => { looks_like_number => sub { looks_like_number($_[0]) } } },
	{ type => HASHREF },
	{ type => ARRAYREF },
);
 
{
	package UsingParamsValidateXS;
	use Params::Validate qw(validate_pos);
	
	sub hash_plus {
		my ($number, $hash, $keys) = validate_pos(@_, @SIG);
		
		my %clone = %$hash;
		$clone{$_} += $number for @$keys;
		return \%clone;
	}
}
 
{
	package UsingParamsValidatePP;
	use Params::Validate::PP;
	
	sub hash_plus {
		my ($number, $hash, $keys) = Params::Validate::PP::validate_pos(@_, @SIG);
		
		my %clone = %$hash;
		$clone{$_} += $number for @$keys;
		return \%clone;
	}
}
 
{
	package UsingTypeParams;
	use Type::Params qw(compile);
	use Types::Standard qw( Num HashRef ArrayRef );
	
	sub hash_plus {
		state $check = compile(Num, HashRef, ArrayRef);
		my ($number, $hash, $keys) = $check->(@_);
		
		my %clone = %$hash;
		$clone{$_} += $number for @$keys;
		return \%clone;
	}
}
 
{
	package UsingSnail;
	use Type::Params qw(compile);
	use Types::Standard qw( Num HashRef ArrayRef );
	
	sub hash_plus {
		my $check = compile(Num, HashRef, ArrayRef);
		my ($number, $hash, $keys) = $check->(@_);
		
		my %clone = %$hash;
		$clone{$_} += $number for @$keys;
		return \%clone;
	}
}
 
{
	package UsingTypeParamsStricter;
	use Type::Params qw(compile);
	use Types::Standard qw( Num HashRef ArrayRef Str );
	
	sub hash_plus {
		state $check = compile(Num, HashRef[Num], ArrayRef[Str]);
		my ($number, $hash, $keys) = $check->(@_);
		
		my %clone = %$hash;
		$clone{$_} += $number for @$keys;
		return \%clone;
	}
}
 
@::input    = (7, { foo => 1, bar => 2, baz => 3 }, [qw/foo bar/]);
$::expected = { foo => 8, bar => 9, baz => 3 };
 
my %all;
for my $impl (qw/ UsingParamsValidateXS UsingParamsValidatePP UsingTypeParams /)
{
	my $code = $impl->can("hash_plus");
	die "bad implementation: $impl!\n" unless eq_deeply($code->(@::input), $::expected);
	
	$all{$impl} = sprintf('%s::hash_plus(@::input)', $impl);
}
 
cmpthese(-3, \%all);
 
__END__
                         Rate UsingParamsValidatePP UsingParamsValidateXS UsingTypeParams
UsingParamsValidatePP  5071/s                    --                  -64%            -85%
UsingParamsValidateXS 14052/s                  177%                    --            -59%
UsingTypeParams       34252/s                  575%                  144%              --