NAME

registry

ABSTRACT

Register Type Libraries with Namespaces

SYNOPSIS

            

              
              
package main;
use strict;
use warnings;
use registry;
$registry;
# $registry->('main')
# 'main' Type::Registry object
# or ...
# return registry object based on caller
# registry::access('main')
# and ...
# resolve type expressions based on caller
# registry::lookup('ClassName')
            
          

DESCRIPTION

This pragma is used to associate the calling package with Type::Tiny type libraries. A $registry variable is made available to the caller to be used to access registry objects. The variable is a callback (i.e. coderef) which should be called with a single argument, the namespace whose registry object you want, otherwise the argument defaults to main.

            

              
              
package main;
use strict;
use warnings;
use registry 'Types::Standard';
use registry 'Types::Common::Numeric';
use registry 'Types::Common::String';
$registry;
# resolve type expression using exported variable
# my $constraint = $registry->('main')->lookup('StrLength[10]')
# resolve type expression using registry function
# my $constraint = registry::lookup('StrLength[10]', 'main')
            
          

You can configure the calling package to be associated with multiple distinct type libraries. The exported $registry object can be used to reify type constraints and resolve type expressions.

AUTHOR

Al Newkirk, awncorp@cpan.org

LICENSE

Copyright (C) 2011-2019, Al Newkirk, et al.

This is free software; you can redistribute it and/or modify it under the terms of the The Apache License, Version 2.0, as elucidated in the "license file".

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