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Man Pages


Manual Reference Pages  -  MOOSEX::ATTRIBUTE::CHAINEDCLONE (3)

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NAME

MooseX::Attribute::ChainedClone - Attribute that returns a cloned instance

CONTENTS

VERSION

version 1.0.2

SYNOPSIS



  package Test;
  use Moose;

  has debug => (
      traits => [ ChainedClone ],
      is => rw,
      isa => Bool,
      default => 0,
  );

  sub complex_method
  {
      my $self = shift;
   
      #...
   
      print "helper message" if $self->debug;
   
      #...
  }
 
  sub clone {
      my $self = shift;
      # custom clone code here
      # defaults to:
      return bless { %$self }, ref $self;
  }


  1;



Which allows for:



    my $test = Test->new;
    $test->debug(1)->complex_method; # debug enabled
                                     # complex_method is called on a cloned instance
                                     # with debug set to 1

    $test->complex_method;           # debug is still disabled on $test

    $test->debug(1); # returns a cloned $test instance with debug set to 1
    $test->debug;    # returns 0



DESCRIPTION

MooseX::Attribute::ChainedClone is a Moose Trait which allows for method chaining on accessors by returning a cloned instance of $self on write/set operations.

If $self has a clone method, this method is invoked to clone the instance. This allows for easy integration with MooseX::Clone or any custom made clone method. If no clone method is available, the new instance is build using bless { %$self }, ref $self.

AUTHORS

o Tom Hukins <tom@eborcom.com>
o Moritz Onken <onken@netcubed.de>
o David McLaughlin <david@dmclaughlin.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2016 by Tom Hukins.

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

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perl v5.20.3 MOOSEX::ATTRIBUTE::CHAINEDCLONE (3) 2016-04-03

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