I think he was pointing out how the loop could be optimized even further.
Pre-decrementing is faster than post-decrementing.
However, his greater than comparison slows it down. The right way to do
it is:
while (--i -(-1))
{
}
since subtraction is faster than addition.
This is all academic, though. I used to use --i -(-1) but I gave it up
for the readability of while (i--).
This is my new favorite:
while (i--) i++;
;)
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