On Sat, Jan 27, 2007 at 06:18:50PM +0000, Nicholas Clark wrote: > Is it defined that $a + $b evaluates the arguments in any particular order? > Even guaranteeing that either the left or the right gets completely evaluated > first would be better than C :-)
In C, that is deliberately left undefined to allow the code generator to have more flexibility in optimizing the code it generates. It's always easy to separate side-effects into multiple statements that are executed in the desired order if you need a specific order. If everything in the language implies a specific order, no opportunity for optimization remains - even if there is no actual necessity for the particular order to be followed. --
