Abigail, I think you misspoke. You are indicating that the addition may precede the increments in your second choice.

Your earlier statement that behaviour is "undefined" is also incorrect. Only the order of evaluation is undefined.

What is known about: 

$a  +  $b

[download]
is that both sides will be evaluated before the addition. What is not defined is whether $a or $b will be evaluated first.

In my example it doesn't matter, but if both terms use and alter the same variables then there can be side effects between the terms.

In reply to Re: Re: Auto-increment frenzy by rir
in thread Auto-increment frenzy by Dist

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