Moose::Meta::Attribute::Native::Trait::Bool - Helper trait for Bool attributes

  package Room;
  use Moose;

  has 'is_lit' => (
      traits    => ['Bool'],
      is        => 'rw',
      isa       => 'Bool',
      default   => 0,
      handles   => {
          illuminate  => 'set',
          darken      => 'unset',
          flip_switch => 'toggle',
          is_dark     => 'not',
      },
  );

  my $room = Room->new();
  $room->illuminate;     # same as $room->is_lit(1);
  $room->darken;         # same as $room->is_lit(0);
  $room->flip_switch;    # same as $room->is_lit(not $room->is_lit);
  return $room->is_dark; # same as !$room->is_lit

This provides a simple boolean attribute, which supports most of the basic math operations.

These methods are implemented in Moose::Meta::Attribute::Native::MethodProvider::Bool. It is important to note that all those methods do in place modification of the value stored in the attribute.

set

Sets the value to 1.

unset

Set the value to 0.

toggle

Toggles the value. If it's true, set to false, and vice versa.

not

Equivalent of 'not $value'.

meta

has_method_provider

method_provider

See BUGS in Moose for details on reporting bugs.

Jason May

Copyright 2007-2009 by Infinity Interactive, Inc.

http://www.iinteractive.com

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.