B::SayBye() is an ordinary subroutine call and won't work because SayBye() is not in B.
B->SayBye() OTOH is a method call, so Perl will look in B's super classes for SayBye().

In reply to Re: ISA with packages ... A barebones minimal example by Arunbear
in thread ISA with packages ... A barebones minimal example by Anonymous Monk

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