bionic (3) Type::Tiny::Manual::UsingWithMouse.3pm.gz

NAME

       Type::Tiny::Manual::UsingWithMouse - how to use Type::Tiny and Type::Library with Mouse

SYNOPSIS

          {
             package Person;

             use Mouse;
             use Types::Standard qw( Str Int );

             has name => (
                is      => "ro",
                isa     => Str,
             );

             my $PositiveInt = Int
                -> where( sub { $_ > 0 } )
                -> plus_coercions( Int, sub { abs $_ } );

             has age => (
                is      => "ro",
                isa     => $PositiveInt,
                coerce  => 1,
                writer  => "_set_age",
             );

             sub get_older {
                my $self = shift;
                my ($years) = @_;
                $PositiveInt->assert_valid($years);
                $self->_set_age($self->age + $years);
             }
          }

STATUS

       Mouse support in Type::Tiny was somewhat of an afterthought. It should work, but is not anywhere near as
       well-tested as Moo or Moose support.

DESCRIPTION

       Type::Tiny is tested with Mouse 1.00 and above.

       Type::Tiny type constraints have an API almost identical to that of Mouse::Meta::TypeConstraint. As a
       result, you can use a Type::Tiny object pretty much anywhere you'd use a Mouse::Meta::TypeConstraint and
       you are unlikely to notice the difference. (And Mouse is unlikely to notice the difference too!)

   Per-Attribute Coercions
       Type::Tiny offers convenience methods to alter the list of coercions associated with a type constraint.
       Let's imagine we wish to allow our "name" attribute to be coerced from an arrayref of strings.

             has name => (
                is      => "ro",
                isa     => Str->plus_coercions(
                   ArrayRef[Str], sub { join " ", @{$_} },
                ),
                coerce  => 1,
             );

       This coercion will apply to the "name" attribute only; other attributes using the "Str" type constraint
       will be unaffected.

       See the documentation for "plus_coercions", "minus_coercions" and "no_coercions" in Type::Tiny.

   Optimization
       Mouse's built-in type constraints are implemented using XS and are stupidly fast. For many type
       constraints, if Type::Tiny notices Mouse is loaded early enough, Type::Tiny will borrow Mouse's XS subs.

       See also Type::Tiny::Manual::Optimization.

   Interactions with MouseX-Types
       Type::Tiny and MouseX::Types type constraints should "play nice". If, for example, "ArrayRef" is taken
       from Types::Standard (i.e. a Type::Tiny-based type library), and "PositiveInt" is taken from
       MouseX::Types::Common::Numeric, then the following should "just work":

          isa => ArrayRef[ PositiveInt ]

          isa => PositiveInt | ArrayRef

SEE ALSO

       For examples using Type::Tiny with Mouse see the SYNOPSIS sections of Type::Tiny and Type::Library, and
       the Mouse integration tests <https://github.com/tobyink/p5-type-tiny/tree/master/t/30-integration/Mouse>,
       and MouseX-Types integration tests <https://github.com/tobyink/p5-type-
       tiny/tree/master/t/30-integration/MouseX-Types> in the test suite.

AUTHOR

       Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

       This software is copyright (c) 2013-2014, 2017 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.