Moose::Meta::Attribute::Native::Trait::Number

Section: User Contributed Perl Documentation (3)
Updated: 2018-05-16
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NAME

Moose::Meta::Attribute::Native::Trait::Number - Helper trait for Num attributes

VERSION

version 2.2011

SYNOPSIS

  package Real;
  use Moose;

  has 'integer' => (
      traits  => ['Number'],
      is      => 'ro',
      isa     => 'Num',
      default => 5,
      handles => {
          set => 'set',
          add => 'add',
          sub => 'sub',
          mul => 'mul',
          div => 'div',
          mod => 'mod',
          abs => 'abs',
      },
  );

  my $real = Real->new();
  $real->add(5);    # same as $real->integer($real->integer + 5);
  $real->sub(2);    # same as $real->integer($real->integer - 2);

DESCRIPTION

This trait provides native delegation methods for numbers. All of the operations correspond to arithmetic operations like addition or multiplication.

DEFAULT TYPE

If you don't provide an "isa" value for your attribute, it will default to "Num".

PROVIDED METHODS

All of these methods modify the attribute's value in place. All methods return the new value.

•: add($value)
Adds the current value of the attribute to $value.
•: sub($value)
Subtracts $value from the current value of the attribute.
•: mul($value)
Multiplies the current value of the attribute by $value.
•: div($value)
Divides the current value of the attribute by $value.
•: mod($value)
Returns the current value of the attribute modulo $value.
•: abs
Sets the current value of the attribute to its absolute value.

BUGS

See ``BUGS'' in Moose for details on reporting bugs.

AUTHORS

•: Stevan Little <stevan.little@iinteractive.com>
•: Dave Rolsky <autarch@urth.org>
•: Jesse Luehrs <doy@tozt.net>
•: Shawn M Moore <code@sartak.org>
•: יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
•: Karen Etheridge <ether@cpan.org>
•: Florian Ragwitz <rafl@debian.org>
•: Hans Dieter Pearcey <hdp@weftsoar.net>
•: Chris Prather <chris@prather.org>
•: Matt S Trout <mst@shadowcat.co.uk>

COPYRIGHT AND LICENSE

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.