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Thanks for the response. My problem is not really what it's doing as that's obvious by the results. My problem is more the how.

unshift when acting with one value is (sort of) moving everything up one slot, then filling in the new [0] slot.

However, when acting with multiple values, is it:

reversing the order of the incoming values then (move everything up one slot, fill in the new [0] slot) N times

or

count the incoming values, move everything up N slots, then fill in the N slots [0],[1],[2],... with the incoming values

My personal bet is on the second as it'd be faster. Admitted, this is not one of the all-time consuming questions about the Universe, but when something doesn't act the way I expect, I like to know how it achieves the result(s) that it gets. Or should I simply go with "No, I won't pay any attention to the man behind the curtain."?

And yes, thank you, I'll be fiddling with the debugger sooner or later.


In reply to Re^2: I am confused by a "Learning Perl" sample showing "unshift" by KenAndrews
in thread I am confused by a "Learning Perl" sample showing "unshift" by KenAndrews

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