Class::Interfaces 0.04

Class::Interfaces is a Per module for defining interface classes inline.

SYNOPSIS

# define some simple interfaces
use Class::Interfaces (
Serializable => [ pack, unpack ],
Printable => [ toString ],
Iterable => [ iterator ],
Iterator => [ hasNext, next ]
);

# or some more complex ones ...

# interface can also inherit from
# other interfaces using this form
use Class::Interfaces (
BiDirectionalIterator => {
isa => Iterator,
methods => [ hasPrev, prev ]
},
ResetableIterator => {
isa => Iterator,
methods => [ reset ]
},
# we even support multiple inheritance
ResetableBiDirectionalIterator => {
isa => [ ResetableIterator, BiDirectionalIterator ]
}
);

# it is also possible to create an
# empty interface, sometimes called
# a marker interface
use Class::Interfaces (
JustAMarker => undef
);

This module provides a simple means to define abstract class interfaces, which can be used to program using the concepts of interface polymorphism.