Just to add to the general discussion, you can sometimes simulate tail recursion optimization by setting the argument list and using goto function:
sub some_function {
  ...
  @_ = @new_list_of arguments
  goto &some_function
  ...
}

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But even this is not very efficient in Perl compared to iteration and normal recursion (though if the recursion is deep, this is an option...though iteration is most likely a better option). (Update: so it could be considered a memory optimization over normal recursion, but definitely not a speed optimization).

In reply to Re: Misunderstanding Recursion by runrig
in thread Misunderstanding Recursion by Andrew_Levenson

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