The link you posted doesn't work.

Thanks, fixed.

If it doesn't support the same operations as Person then in what sense does it extend Person?

See "Doesn't this break polymorphism?" in the FAQ.

Or is this meant to be an Acme type module?

Initially, yes, hence the release date. But I can see potential uses for it.

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re^2: Introducing MooseX::hasn't by tobyink
in thread Introducing MooseX::hasn't by tobyink

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