But, $n_after_the_first_increment would be different, by 1, to $n_after_the_second_increment, but your own output--in both the relevant case and your two fantasy cases--shows both digits are the same.

It returns $n (the scalar, not the value within) after first increment, not some copy $n_after_the_first_increment after the first increment.

And the only way for that to happen, is for both pre-increments to have occurred, before the subroutine gets whatever it is given.

You are mistaken. The first result in placed on the stack before the second is evaluated. See the code in the grandparent.

In reply to Re^10: Pre vs Post Incrementing variables by ikegami
in thread Pre vs Post Incrementing variables by SavannahLion

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