My understanding is that the while will execute so long as there are elements in @a...

ivanthemad: I expect you already understand the following point perfectly well, but I want to dispell my sneaking suspicion of a possible misapprehension on your part.

The while-loop in the example code will only begin execution (Update: of a loopthe loop body) if the array is non-empty. However, (Update: once begun) looploop body execution will continue regardless of the state of the array unless an explicit loop exit is made conditional upon array state, e.g., with a statement like  last unless @a;.

Update: Clarified (hopefully) pertinence to loop body per repellent.

In reply to Re: arrays: shifting in while loop by AnomalousMonk
in thread arrays: shifting in while loop by ivanthemad

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