NAME

Venus::Role::Matchable - Matchable Role

ABSTRACT

Matchable Role for Perl 5

SYNOPSIS

  package Example;

  use Venus::Class;

  with 'Venus::Role::Matchable';

  attr 'active';

  sub validate {
    my ($self) = @_;

    return $self->match->when('active')->then(true)->none(false);
  }

  package main;

  my $example = Example->new;

  # $example->validate->result;

  # 0

DESCRIPTION

This package modifies the consuming package and provides a mechanism for assembling complex pattern matching operations.

METHODS

This package provides the following methods:

match

  match(Str | CodeRef $method, Any @args) (Match)

The match method returns a Venus::Match object having the match value set to the invocant or the result of a dispatch. This method supports dispatching, i.e. providing a method name and arguments whose return value will be acted on by this method.

Since 0.04

match example 1

  package main;

  my $example = Example->new;

  my $match = $example->match;

  # bless({..., value => bless(..., 'Example')}, 'Venus::Match')

match example 2

  package main;

  my $example = Example->new;

  my $match = $example->match('active');

  # bless({..., value => undef}, 'Venus::Match')

match example 3

  package main;

  my $example = Example->new(active => 1);

  my $match = $example->match('active');

  # bless({..., value => 1}, 'Venus::Match')