Just because $obj->can('foo') doesn't mean that $objs idea of foo matches mine ... that's where documented, named, interfaces (or "contracts" if you want a less java centric term) come in handy.

You have an explicit agreement not just that $obj->can('foo') -- but that it means what you think it means.

In reply to Re^2: Interfaces for the masses! by hossman
in thread Interfaces for the masses! by rvosa

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