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moosex::storage::traits::onlywhenbuilt

MooseX::Storage::Traits::OnlyWhenBuilt(3pm)		User Contributed Perl Documentation	       MooseX::Storage::Traits::OnlyWhenBuilt(3pm)

NAME

       MooseX::Storage::Traits::OnlyWhenBuilt - A custom trait to bypass serialization

SYNOPSIS

	   {   package Point;
	       use Moose;
	       use MooseX::Storage;

	       with Storage( traits => [qw|OnlyWhenBuilt|] );

	       has 'x' => (is => 'rw', lazy_build => 1 );
	       has 'y' => (is => 'rw', lazy_build => 1 );
	       has 'z' => (is => 'rw', builder => '_build_z' );

	       sub _build_x { 3 }
	       sub _build_y { expensive_computation() }
	       sub _build_z { 3 }

	   }

	   my $p = Point->new( 'x' => 4 );

	   # the result of ->pack will contain:
	   # { x => 4, z => 3 }
	   $p->pack;

DESCRIPTION

       Sometimes you don't want a particular attribute to be part of the serialization if it has not been built yet. If you invoke "Storage()" as
       outlined in the "Synopsis", only attributes that have been built (ie, where the predicate returns 'true') will be serialized.  This avoids
       any potentially expensive computations.

       See the SYNOPSIS for a nice example that can be easily cargo-culted.

METHODS

   Introspection
       meta

BUGS

       All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to
       cpan-RT.

AUTHOR

       Stevan Little <stevan.little@iinteractive.com>

COPYRIGHT AND LICENSE

       Copyright 2007-2008 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.

perl v5.14.2							    2012-02-28			       MooseX::Storage::Traits::OnlyWhenBuilt(3pm)

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