Specio::Constraint::PaUsertContributedSpecio::Constraint::Parameterizable(3pm) NAME Specio::Constraint::Parameterizable - A class which represents parameterizable constraints VERSION version 0.48 SYNOPSIS my $arrayref = t('ArrayRef'); my $arrayref_of_int = $arrayref->parameterize( of => t('Int') ); DESCRIPTION This class implements the API for parameterizable types like "ArrayRef" and "Maybe". API This class implements the same API as Specio::Constraint::Simple, with a few additions. Specio::Constraint::Parameterizable->new(...) This class's constructor accepts two additional parameters: • parameterized_constraint_generator This is a subroutine that generates a new constraint subroutine when the type is parameterized. It will be called as a method on the type and will be passed a single argument, the type object for the type parameter. This parameter is mutually exclusive with the "parameterized_inline_generator" parameter. • parameterized_inline_generator This is a subroutine that generates a new inline generator subroutine when the type is parameterized. It will be called as a method on the Specio::Constraint::Parameterized object when that object needs to generate an inline constraint. It will receive the type parameter as the first argument and the variable name as a string as the second. This probably seems fairly confusing, so looking at the examples in the Specio::Library::Builtins code may be helpful. This parameter is mutually exclusive with the "parameterized_constraint_generator" parameter. $type->parameterize(...) This method takes two arguments. The "of" argument should be an object which does the Specio::Constraint::Role::Interface role, and is required. The other argument, "declared_at", is optional. If it is not given, then a new Specio::DeclaredAt object is creating using a call stack depth of 1. This method returns a new Specio::Constraint::Parameterized object. SUPPORT Bugs may be submitted at <https://github.com/houseabsolute/Specio/issues>. SOURCE The source code repository for Specio can be found at <https://github.com/houseabsolute/Specio>. AUTHOR Dave Rolsky <autarch@urth.org> COPYRIGHT AND LICENSE This software is Copyright (c) 2012 - 2022 by Dave Rolsky. This is free software, licensed under: The Artistic License 2.0 (GPL Compatible) The full text of the license can be found in the LICENSE file included with this distribution. perl v5.34.0 2022Specio::Constraint::Parameterizable(3pm)
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