NAME
    isa - isn't the isa operator

SYNOPSIS
      use isa 'HTTP::Tiny';
  
      my $obj = MyApp->get_user_agent;
  
      if ( isa_HTTP_Tiny $obj ) {
        my $response = $obj->get( 'https://www.example.com/' );
        MyApp->do_something( $response );
      }

DESCRIPTION
    The new `isa` operator in Perl 5.30 is pretty great, but if you need to
    support legacy versions of Perl, you can't use it yet. This module gives
    you isa-like functions you can use in Perl 5.6 and above.

    If you've got Type::Tiny::XS installed, you will probably find that this
    module is *faster* than the native `isa` operator!

IMPORT
    You need to list the classes you'll be using on the `use` line.

      use isa 'HTTP::Tiny', 'MyApp::Person';

    This module will replace the "::" bits with underscores, and prefix "isa_"
    to each name to create functions like `isa_HTTP_Tiny` and
    `isa_MyApp_Person`.

  Alternative Style
    If you'd prefer to pick your own names for the imported functions, you can
    use a hashref in the import:

      use isa {
        isa_Browser => 'HTTP::Tiny',
        isa_Person  => 'MyApp::Person',
      };

    You can't mix and match styles within one import, but you can `use isa`
    more than once.

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

SEE ALSO
    perlop, Scalar::Util.

AUTHOR
    Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE
    This software is copyright (c) 2020 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.