NAME
    Type::Tiny::Manual - an overview of Type::Tiny

SYNOPSIS
    Type::Tiny is a small class for writing type constraints, inspired by
    Moose's type constraint API. It has only one non-core dependency (and even
    that is simply a module that was previously distributed as part of
    Type::Tiny but has since been spun off), and can be used with Moose, Mouse
    and Moo (or none of the above).

    Type::Tiny is bundled with Type::Library a framework for organizing type
    constraints into collections.

    Also bundled is Types::Standard, a Moose-inspired library of useful type
    constraints.

    Type::Params is also provided, to allow very fast checking and coercion of
    function and method parameters.

SEE ALSO
    *   Libraries - how to build a type library with Type::Tiny, Type::Library
        and Type::Utils

    *   Coercions - adding coercions to type constraints

    *   Using with Moose - how to use Type::Tiny and Type::Library with Moose

    *   Using with Mouse - how to use Type::Tiny and Type::Library with Mouse

    *   Using with Moo - how to use Type::Tiny and Type::Library with Moo

    *   Using with Other OO Frameworks - how to use Type::Tiny and
        Type::Library with other OO frameworks

    *   Type::Tiny and friends don't need to be used within an OO framework.
        See FreeMind::Node for an example that does not.

    *   Processing arguments to subs - coerce and validate arguments to
        functions and methods.

    *   Other modules using Type::Tiny in interesting ways: Type::Tie,
        Test::Mocha, Scalar::Does, Set::Equivalence...

    *   Optimization - squeeze the most out of your CPU.

    *   Type::Tiny maintenance policies - the stability policy.

DEPENDENCIES
    Type::Tiny requires at least Perl 5.6.1, though certain Unicode-related
    features (e.g. non-ASCII type constraint names) may work better in newer
    versions of Perl.

    Type::Tiny requires Exporter::Tiny, a module that was previously bundled
    in this distribution, but has since been spun off as a separate
    distribution. Don't worry - it's quick and easy to install.

    At run-time, Type::Tiny also requires the following modules: B,
    B::Deparse, Carp, Data::Dumper, Scalar::Util, Text::Balanced, overload,
    strict and warnings. All of these come bundled with Perl itself. Prior to
    Perl 5.8, Scalar::Util and Text::Balanced do not come bundled with Perl
    and will need installing separately from the CPAN.

    Certain features require additional modules. Tying a variable to a type
    constraint (e.g. `tie my $count, Int`) requires Type::Tie; stack traces on
    exceptions require Devel::StackTrace. The Reply::Plugin::TypeTiny plugin
    for Reply requires Reply (obviously). Devel::LexAlias may *slightly*
    increase the speed of some of Type::Tiny's compiled coderefs.

    Type::Tiny::XS is not required, but if available provides a speed boost
    for some type checks. (Setting the environment variable
    `PERL_TYPE_TINY_XS` to false, or setting `PERL_ONLY` to true will suppress
    the use of Type::Tiny::XS, even if it is available.)

    The test suite additionally requires Test::More, Test::Fatal and
    Test::Requires. Test::More comes bundled with Perl, but if you are using a
    version of Perl older than 5.14, you will need to upgrade to at least
    Test::More version 0.96. Test::Requires and Test::Fatal (plus Try::Tiny
    which Test::Fatal depends on) are bundled with Type::Tiny in the `inc`
    directory, so you do not need to install them separately.

    If using Type::Tiny in conjunction with Moo, then at least Moo 1.000000 is
    recommended. If using Type::Tiny with Moose, then at least Moose 2.0000 is
    recommended. If using Type::Tiny with Mouse, then at least Mouse 1.00 is
    recommended. Type::Tiny is mostly untested against older versions of these
    packages.

TYPE::TINY VERSUS X
  Specio
    Type::Tiny is similar in aim to Specio. The major differences are

    *   Type::Tiny is "tiny" (Specio will eventually have fewer dependencies
        than it currently does, but is unlikely to ever have as few as
        Type::Tiny);

    *   Specio has a somewhat nicer API (better method names; less
        duplication), and its API is likely to improve further. Type::Tiny's
        aims at complete compatibility with current versions of Moose and
        Mouse, so there is a limit to how much I can deviate from the existing
        APIs of (Moose|Mouse)::Meta::TypeConstraint.

  MooseX::Types
    Type::Tiny libraries expose a similar interface to MooseX::Types
    libraries. In most cases you should be able to rewrite a MooseX::Types
    library to use Type::Tiny pretty easily.

  MooX::Types::MooseLike
    Type::Tiny is faster and supports coercions.

  Scalar::Does
    Scalar::Does is somewhat of a precursor to Type::Tiny, but has now been
    rewritten to use Type::Tiny internally.

    It gives you a `does($value, $type)` function that is roughly equivalent
    to `$type->check($value)` except that $type may be one of a list of
    pre-defined strings (instead of a Type::Tiny type constraint); or may be a
    package name in which case it will be assumed to be a role and checked
    with `$value->DOES($type)`.

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

SUPPORT
    IRC: support is available through in the *#moops* channel on irc.perl.org
    <http://www.irc.perl.org/channels.html>.

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.