Quite simply, all classes in perl inherit from UNIVERSAL. UNIVERSAL implements can. Your class then has an obligation (IMO of course) to provide a working version of can in its interface. If you break aspects of your base class in your subclass you are doing bad OO and defeating the whole purpose of re-use through inheritance.

-stvn

In reply to Re: What is this can() and why is breaking it (un)acceptable? by stvn
in thread Why breaking can() is acceptable by tilly

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