But the loop goes up to 255. So if len(arr) == 10, then assert!(len(arr) <= 255) woulds succeed, but you'd get an out-of-bounds access if you tried to access ar

But the loop goes up to 255. So if len(arr) == 10, then assert!(len(arr) <= 255) woulds succeed, but you'd get an out-of-bounds access if you tried to access arr at 11.