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Re: Recursion Confusion

by sundialsvc4 (Abbot)
on Apr 29, 2013 at 15:21 UTC ( #1031241=note: print w/replies, xml ) Need Help??

in reply to Recursion Confusion

The key to understanding recursion is to realize where the my variables that are declared within a sub actually live:   “on the stack,” which also contains information needed to return from a subroutine call.   When any subroutine calls itself, directly or indirectly, i.e. “recursion,” each instance of the call has its own set of so-called “local” variables.

Thus, any sub can, within a loop controlled by a local variable, call any other sub, including itself, and it Just Works.™

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