.\" Automatically generated by Pod::Man 4.07 (Pod::Simple 3.32)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is >0, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.if !\nF .nr F 0
.if \nF>0 \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    if !\nF==2 \{\
.        nr % 0
.        nr F 2
.    \}
.\}
.\" ========================================================================
.\"
.IX Title "Type::Tiny::Class 3pm"
.TH Type::Tiny::Class 3pm "2019-05-06" "perl v5.24.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Type::Tiny::Class \- type constraints based on the "isa" method
.SH "STATUS"
.IX Header "STATUS"
This module is covered by the
Type-Tiny stability policy.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Type constraints of the general form \f(CW\*(C`{ $_\->isa("Some::Class") }\*(C'\fR.
.PP
This package inherits from Type::Tiny; see that for most documentation.
Major differences are listed below:
.SS "Constructor"
.IX Subsection "Constructor"
.ie n .IP """new""" 4
.el .IP "\f(CWnew\fR" 4
.IX Item "new"
When the constructor is called on an \fIinstance\fR of Type::Tiny::Class, it
passes the call through to the constructor of the class for the constraint.
So for example:
.Sp
.Vb 3
\&   my $type = Type::Tiny::Class\->new(class => "Foo::Bar");
\&   my $obj  = $type\->new(hello => "World");
\&   say ref($obj);   # prints "Foo::Bar"
.Ve
.Sp
This little bit of \s-1DWIM\s0 was borrowed from MooseX::Types::TypeDecorator,
but Type::Tiny doesn't take the idea quite as far.
.SS "Attributes"
.IX Subsection "Attributes"
.ie n .IP """class""" 4
.el .IP "\f(CWclass\fR" 4
.IX Item "class"
The class for the constraint.
.ie n .IP """constraint""" 4
.el .IP "\f(CWconstraint\fR" 4
.IX Item "constraint"
Unlike Type::Tiny, you \fIcannot\fR pass a constraint coderef to the constructor.
Instead rely on the default.
.ie n .IP """inlined""" 4
.el .IP "\f(CWinlined\fR" 4
.IX Item "inlined"
Unlike Type::Tiny, you \fIcannot\fR pass an inlining coderef to the constructor.
Instead rely on the default.
.ie n .IP """parent""" 4
.el .IP "\f(CWparent\fR" 4
.IX Item "parent"
Parent is automatically calculated, and cannot be passed to the constructor.
.SS "Methods"
.IX Subsection "Methods"
.ie n .IP """plus_constructors($source, $method_name)""" 4
.el .IP "\f(CWplus_constructors($source, $method_name)\fR" 4
.IX Item "plus_constructors($source, $method_name)"
Much like \f(CW\*(C`plus_coercions\*(C'\fR but adds coercions that go via a constructor.
(In fact, this is implemented as a wrapper for \f(CW\*(C`plus_coercions\*(C'\fR.)
.Sp
Example:
.Sp
.Vb 1
\&   package MyApp::Minion;
\&   
\&   use Moose; extends "MyApp::Person";
\&   
\&   use Types::Standard qw( HashRef Str );
\&   use Type::Utils qw( class_type );
\&   
\&   my $Person = class_type({ class => "MyApp::Person" });
\&   
\&   has boss => (
\&      is     => "ro",
\&      isa    => $Person\->plus_constructors(
\&         HashRef,     "new",
\&         Str,         "_new_from_name",
\&      ),
\&      coerce => 1,
\&   );
\&   
\&   package main;
\&   
\&   MyApp::Minion\->new(
\&      ...,
\&      boss => "Bob",  ## via MyApp::Person\->_new_from_name
\&   );
\&   
\&   MyApp::Minion\->new(
\&      ...,
\&      boss => { name => "Bob" },  ## via MyApp::Person\->new
\&   );
.Ve
.Sp
Because coercing \f(CW\*(C`HashRef\*(C'\fR via constructor is a common desire, if
you call \f(CW\*(C`plus_constructors\*(C'\fR with no arguments at all, this is the
default.
.Sp
.Vb 2
\&   $classtype\->plus_constructors(Types::Standard::HashRef, "new")
\&   $classtype\->plus_constructors()  ## identical to above
.Ve
.Sp
This is handy for Moose/Mouse/Moo\-based classes.
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs to
<http://rt.cpan.org/Dist/Display.html?Queue=Type\-Tiny>.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Type::Tiny::Manual.
.PP
Type::Tiny.
.PP
Moose::Meta::TypeConstraint::Class.
.SH "AUTHOR"
.IX Header "AUTHOR"
Toby Inkster <tobyink@cpan.org>.
.SH "COPYRIGHT AND LICENCE"
.IX Header "COPYRIGHT AND LICENCE"
This software is copyright (c) 2013\-2014, 2017\-2019 by Toby Inkster.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
.SH "DISCLAIMER OF WARRANTIES"
.IX Header "DISCLAIMER OF WARRANTIES"
\&\s-1THIS PACKAGE IS PROVIDED \*(L"AS IS\*(R" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.\s0