NAME

       Method::Alias - Create method aliases (and do it safely)

SYNOPSIS

         # My method
         sub foo {
             ...
         }

         # Alias the method
         use Method::Alias 'bar' => 'foo',
                           'baz' => 'foo';

DESCRIPTION

       For a very long time, whenever I wanted to have a method alias (provide an alternate name
       for a method) I would simple do a GLOB alias. That is,

         # My method
         sub foo {
             ...
         }

         # Alias the method
         *bar = *foo;

       While this works fine for functions, it does not work for methods.

       If your class has a subclass that redefines "foo", any call to "bar" will result in the
       overloaded method being ignored and the wrong "foo" method being called.

       These are basically bugs waiting to happen, and having completed a number of very large
       APIs with lots of depth myself, I've been bitten several times.

       In this situation, the canonical and fasest way to handle an alias looks something like
       this.

         # My method
         sub foo {
            ...
         }

         # Alias the method
         sub bar { shift->foo(@_) }

       Note that this adds an extra entry to the caller array, but this isn't really all that
       important unless you are paranoid about these things.

       The alternative would be to try to find the method using UNIVERSAL::can, and then goto it.
       I might add this later if someone really wants it, but until then the basic method will
       suffice.

       That doing this right is even worthy of a module is debatable, but I would rather have
       something that looks like a method alias definition, than have to document additional
       methods all the time.

   Using Method::Alias
       Method::Alias is designed to be used as a pragma, to which you provide a set of pairs of
       method names. Only very minimal checking is done, if you wish to create infinite loops or
       what have you, you are more than welcome to shoot yourself in the foot.

         # Add a single method alias
         use Method::Alias 'foo' => 'bar';

         # Add several method aliases
         use Method::Alias 'a' => 'b',
                           'c' => 'd',
                           'e' => 'f';

       And for now, that's all there is to it.

METHODS

   import from => to, ...
       Although primarily used as a pragma, you may call import directly if you wish.

       Taking a set of pairs of normal strings, the import method creates a number of methods in
       the caller's package to call the real method.

       Returns true, or dies on error.

SUPPORT

       Bugs should always be submitted via the CPAN bug tracker

       <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Method-Alias>

       For other issues, contact the maintainer

AUTHORS

       Adam Kennedy <cpan@ali.as>

SEE ALSO

       <http://ali.as/>

COPYRIGHT

       Copyright 2004, 2006 Adam Kennedy. All rights reserved.

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

       The full text of the license can be found in the LICENSE file included with this module.