My guess is that...
... prototypes are enforced at compile time. I wonder if part of enforcement has the side-effect of "pickling" a reference to the subroutine to be invoked. If that's the case, swapping the typeglob at runtime would have no effect.

In reply to Re: Little Perl Mysteries: what's your answer? by dws
in thread Little Perl Mysteries: what's your answer? by Ovid

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