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lib/Algorithm/Evolutionary/Op/Bitflip.pm  view on Meta::CPAN

use strict; #-*-cperl-*-
use warnings;

use lib qw( ../../lib ../../../lib ../../../../lib);

=head1 NAME

Algorithm::Evolutionary::Op::Bitflip - Bit-flip mutation

=head1 SYNOPSIS

  my $op = new Algorithm::Evolutionary::Op::Bitflip 2; #Create from scratch with default rate

=head1 Base Class

L<Algorithm::Evolutionary::Op::Base|Algorithm::Evolutionary::Op::Base>

=head1 DESCRIPTION

Mutation operator for a GA; changes a single bit in the bitstring; 
does not need a rate

=head1 METHODS 

=cut

package Algorithm::Evolutionary::Op::Bitflip;

our ($VERSION) = ( '$Revision: 3.4 $ ' =~ /(\d+\.\d+)/ );

use Carp;
use Clone qw(clone);

use base 'Algorithm::Evolutionary::Op::Base';

#Class-wide constants
our $ARITY = 1;

=head2 new( [$how_many] [,$priority] )

Creates a new mutation operator with a bitflip application rate, which defaults to 0.5,
and an operator application rate (general for all ops), which defaults to 1.

=cut

sub new {
  my $class = shift;
  my $howMany = shift || 1; 
  my $rate = shift || 1;

  my $hash = { howMany => $howMany || 1};
  my $self = Algorithm::Evolutionary::Op::Base::new( 'Algorithm::Evolutionary::Op::Bitflip', $rate, $hash );
  return $self;
}

=head2 create()

Creates a new mutation operator.

=cut

sub create {
  my $class = shift;
  my $self = {};