Type::Tiny::Manual - an overview of Type::Tiny
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.
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.
Optimization - squeeze the most out of your CPU.
Type::Tiny maintenance policies - the stability policy.
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 $count, Int) requires Type::Tie; stack traces on exceptions require Devel::StackTrace. The Reply::Plugin::TypeTiny plugin for Reply requires Reply (obviously). Devel::LexAlias may slightly increase the speed of some of Type::Tiny's compiled coderefs.
Type::Tiny::XS is not required, but if available provides a speed boost for some type checks. (Setting the environment variable
PERL_TYPE_TINY_XS to false, or setting
PERL_ONLY to true will suppress the use of Type::Tiny::XS, even if it is available.)
The test suite additionally requires Test::More, Test::Fatal and Test::Requires. Test::More comes bundled with Perl, but if you are using a version of Perl older than 5.14, you will need to upgrade to at least Test::More version 0.96. Test::Requires and Test::Fatal (plus Try::Tiny which Test::Fatal depends on) are bundled with Type::Tiny in the
inc directory, so you do not need to install them separately.
If using Type::Tiny in conjunction with Moo, then at least Moo 1.000000 is recommended. If using Type::Tiny with Moose, then at least Moose 2.0000 is recommended. If using Type::Tiny with Mouse, then at least Mouse 1.00 is recommended. Type::Tiny is mostly untested against older versions of these packages.
Type::Tiny is similar in aim to Specio. The major differences are
Type::Tiny is "tiny" (Specio will eventually have fewer dependencies than it currently does, but is unlikely to ever have as few as Type::Tiny);
Specio has a somewhat nicer API (better method names; less duplication), and its API is likely to improve further. Type::Tiny's aims at complete compatibility with current versions of Moose and Mouse, so there is a limit to how much I can deviate from the existing APIs of (Moose|Mouse)::Meta::TypeConstraint.
Type::Tiny is faster and supports coercions.
Scalar::Does is somewhat of a precursor to Type::Tiny, but has now been rewritten to use Type::Tiny internally.
It gives you a
does($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
Please report any bugs to http://rt.cpan.org/Dist/Display.html?Queue=Type-Tiny.
IRC: support is available through in the #moops channel on irc.perl.org.
Toby Inkster <firstname.lastname@example.org>.
This software is copyright (c) 2013-2014, 2017-2019 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.
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.