An interface (as you describe it, similar to the Java concept) is a degenerate case of a role. A role can provide default (and even parametrized) implementations of the appropriate methods and can disambiguate dispatch at compile time.

Hopefully, Perl 6 will even also be able to dispatch multimethods based on roles.

In reply to Re^3: Interfaces for the masses! by chromatic
in thread Interfaces for the masses! by rvosa

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