Well maybe it's not that wise to advertise my worst node ever, since it has already been heavily donwvoted, but in it I had a program meant to run indefinitely and to alternate two "phases": a sleeping one and active one. Their respective behaviour was implemented with a pair of subs switching one another upon a certain condition through a magical goto. There may be more serious situations in which a similar scheme could be desirable, I guess.

In reply to Re^2: Tail recursion elimination by blazar
in thread Tail recursion elimination by billh

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