NAME MooseX::Declare - Declarative syntax for Moose SYNOPSIS use MooseX::Declare; class BankAccount { has 'balance' => ( isa => 'Num', is => 'rw', default => 0 ); method deposit (Num $amount) { $self->balance( $self->balance + $amount ); } method withdraw (Num $amount) { my $current_balance = $self->balance(); ( $current_balance >= $amount ) || confess "Account overdrawn"; $self->balance( $current_balance - $amount ); } } class CheckingAccount extends BankAccount { has 'overdraft_account' => ( isa => 'BankAccount', is => 'rw' ); before withdraw (Num $amount) { my $overdraft_amount = $amount - $self->balance(); if ( $self->overdraft_account && $overdraft_amount > 0 ) { $self->overdraft_account->withdraw($overdraft_amount); $self->deposit($overdraft_amount); } } } DESCRIPTION This module provides syntactic sugar for Moose, the postmodern object system for Perl 5. When used, it sets up the "class" and "role" keywords. KEYWORDS class class Foo { ... } my $anon_class = class { ... }; Declares a new class. The class can be either named or anonymous, depending on whether or not a classname is given. Within the class definition Moose and MooseX::Method::Signatures are set up automatically in addition to the other keywords described in this document. At the end of the definition the class will be made immutable. It's possible to specify options for classes: extends class Foo extends Bar { ... } Sets a superclass for the class being declared. with class Foo with Role { ... } Applies a role to the class being declared. is mutable class Foo is mutable { ... } Causes the class not to be made immutable after its definition. role role Foo { ... } my $anon_role = role { ... }; Declares a new role. The role can be either named or anonymous, depending on wheter or not a name is given. Within the role definition Moose::Role and MooseX::Method::Signatures are set up automatically in addition to the other keywords described in this document. It's possible to specify options for roles: with role Foo with Bar { ... } Applies a role to the role being declared. before / after / around / override / augment before foo ($x, $y, $z) { ... } after bar ($x, $y, $z) { ... } around baz ($x, $y, $z) { ... } override moo ($x, $y, $z) { ... } augment kuh ($x, $y, $z) { ... } Add a method modifier. Those work like documented in Moose, except for the slightly nicer syntax and the method signatures, which work like documented in MooseX::Method::Signatures. For the "around" modifier an additional argument called $orig is automatically set up as the invocant for the method. SEE ALSO Moose Moose::Role MooseX::Method::Signatures AUTHOR Florian Ragwitz COPYRIGHT AND LICENSE Copyright (c) 2008 Florian Ragwitz Licensed under the same terms as perl itself.