NAME
    Refinements - safer monkey-patching; Ruby-2.0-style refinements for Perl

SYNOPSIS
       BEGIN {
          package LwpDebugging;
          use Refinements;
      
          refine 'LWP::UserAgent::request' => sub
          {
             my $next = shift;  # like Moose's "around" modifier
             my $self = shift;
         
             warn sprintf 'REQUEST: %s %s', $_[0]->method, $_[0]->uri;
         
             return $self->$next(@_);
          };
       };
   
       {
          package MyApp;
      
          use LWP::UserAgent;
      
          my $ua  = LWP::UserAgent->new;
          my $req = HTTP::Request->new(GET => 'http://www.example.com/');
      
          {
             use LwpDebugging;
         
             my $res = $ua->request($req);   # issues debugging warning
         
             # $ua->get internally calls $ua->request
             my $res2 = $ua->get('http://www.example.org/');  # no warning
          }
      
          my $res = $ua->request($req);  # no warning
       }

DESCRIPTION
    Refinements allows you to define Ruby-2.0-style refinements. Refinements
    are a lexically-scoped monkey-patch. In the SYNOPSIS example, we're using
    a refinement that overrides LWP::UserAgent's `request` method. The
    refinement only gets applied in the small block of code where `use
    LwpDebugging` appears. Calling the `request` method from outside that
    block ignores the refinement. Refinements are lexically-scoped rather than
    dynamically-scoped.

    Refinements can be used to add or override aspects of a class' behaviour,
    as an alternative to subclassing.

    Credit where it's due: all the hard work is done by Method::Lexical. The
    Refinements module just provides an interface to Method::Lexical that may
    be more comfortable to many users. Defining a refinement becomes much like
    defining method modifiers in Moose or Moo.

    In particular, the Refinements module does a two things:

    1.  It makes your package inherit from Refinements::Package; and

    2.  It exports a convenience function `refine` to your package.

  Functions
    The following function is exported:

    `refine(@names, $coderef)`
        This is roughly equivalent to:

           $your_package->add_refinement($_, $coderef) for @names;

        See "Methods" in Refinements::Package for further information on the
        `add_refinement` method.

BUGS
    Please report any bugs to
    <http://rt.cpan.org/Dist/Display.html?Queue=Refinements>.

SEE ALSO
    Refinements::Package, Method::Lexical.

AUTHOR
    Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE
    This software is copyright (c) 2013 by Toby Inkster.

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

DISCLAIMER OF WARRANTIES
    THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
    WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
    MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.