Class::Trait 0.21

Class::Trait is a Perl implementation of Traits in Perl.

SYNOPSIS

# to turn on debugging (do this before
# any other traits are loaded)
use Class::Trait debug;

# nothing happens, but the module is loaded
use Class::Trait;

# loads these two traits and flatten them
# into the current package
use Class::Trait qw(TPrintable TComparable);

# loading a trait and performing some
# trait operations (alias, exclude) first
use Class::Trait (
TPrintable => {
alias => { "stringValue" => "strVal" },
exclude => "stringValue",
},
);

# loading two traits and performing
# a trait operation (exclude) on one
# module to avoid method conflicts
use Class::Trait
TComparable => {
# exclude the basic equality method
# from TComparable and use the ones
# in TEquality instead.
exclude => [ "notEqualTo", "equalTo" ]
},
TEquality # <- use equalTo and notEqualTo from here
);

# when building a trait, you need it
# to inherit from the trait meta/base-class
# so do this ...
use Class::Trait base;

This document attempts to explain Traits in terms of Perl.