I read that with a combination of fascination and nausea. Well played. But actually I remember that it can occasionally be used in image processing too, when

I read that with a combination of fascination and nausea. Well played. But actually I remember that it can occasionally be used in image processing too, when you would use a pointer to iterate through an image, I would routinely use things like dx = *(ptr+1)-*(ptr-1); which is essentially the same as dx = ptr[1] - ptr[-1];