Provided by: libspecio-perl_0.44-1_all
Specio::Constraint::Parameterizable - A class which represents parameterizable constraints
my $arrayref = t('ArrayRef'); my $arrayref_of_int = $arrayref->parameterize( of => t('Int') );
This class implements the API for parameterizable types like "ArrayRef" and "Maybe".
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.
Bugs may be submitted at <https://github.com/houseabsolute/Specio/issues>. I am also usually active on IRC as 'autarch' on "irc://irc.perl.org".
The source code repository for Specio can be found at <https://github.com/houseabsolute/Specio>.
Dave Rolsky <firstname.lastname@example.org>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2012 - 2019 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.