Why is i=i+1 faster than i++?

Question

Test this code in Flash:

var i:int = 0;
for (var j:int = 0; j < 5000000; j++)
{
    i=i+1;
}// use about 300ms.

i = 0;
for (var j:int = 0; j < 5000000         


        

Answer 1

I don't have a response to your question but the following has been the fastest among all the loops I tried.

import flash.utils.getTimer;

var t:int = getTimer();
var i:int = 0, j:int = -1;
while (++j < 5000000) {
    i += 1;
}
trace(getTimer()-t)

This gives me 83 ms.