Using local() it's easy to monkey patch a variable, and here is a way of monkey patching a method of a particular instance.

Suppose you want to monkey patch an entire module? What's the best way to go about it?

There will be two cases: one where the module has not been loaded yet and the case where it has been. And, to be most useful, you'd want the patching to be reversible.

In reply to monkey patching an entire module by perl5ever

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