MooseX::AttributeHelpers::String

  package MyHomePage;
  use Moose;
  use MooseX::AttributeHelpers;
  
  has 'text' => (
      metaclass => 'String',
      is        => 'rw',
      isa       => 'Str',
      default   => sub { '' },
      provides  => {
          append => "add_text",
          replace => "replace_text",
      }
  );
  my $page = MyHomePage->new();
  $page->add_text("foo"); # same as $page->text($page->text . "foo");

This module provides a simple string attribute, to which mutating string operations can be applied more easily (no need to make an lvalue attribute metaclass or use temporary variables). Additional methods are provided for completion.

If your attribute definition does not include any of is, isa, default or provides but does use the "String" metaclass, then this module applies defaults as in the "SYNOPSIS" above. This allows for a very basic counter definition:

  has 'foo' => (metaclass => 'String');
  $obj->append_foo;

meta

method_provider

has_method_provider

helper_type

process_options_for_provides

Run before its superclass method.

check_provides_values

Run after its superclass method.

It is important to note that all those methods do in place modification of the value stored in the attribute.

inc

Increments the value stored in this slot using the magical string autoincrement operator. Note that Perl doesn't provide analogeous behavior in "--", so "dec" is not available.

append $string

Append a string, like ".=".

prepend $string

Prepend a string.

replace $pattern $replacement

Performs a regexp substitution ("s" in perlop). There is no way to provide the "g" flag, but code references will be accepted for the replacement, causing the regex to be modified with a single "e". "/smxi" can be applied using the "qr" operator.

match $pattern

Like replace but without the replacement. Provided mostly for completeness.

"chop"

"chop" in perlfunc

"chomp"

"chomp" in perlfunc

"clear"

Sets the string to the empty string (not the value passed to "default").

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.

Stevan Little <stevan@iinteractive.com>

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.