I generally don't use it too much myself because I agree it tends to add a bit of confusion. A tiny bit but still. I think that in that particular case the fac

I generally don't use it too much myself because I agree it tends to add a bit of confusion. A tiny bit but still. I think that in that particular case the fact the array[m] is used in the next line makes things not as obvious as they could be visually. I feel that the following requires less reading: m -=1; t = array[m]; array[m] = array[i]; array[i] = t; To me, it's faster to parse.