Reminds me of an interesting thing I noticed, a few times the compiler has been able to make a tighter inner loop simply by adding an `assert!` on the array len

Reminds me of an interesting thing I noticed, a few times the compiler has been able to make a tighter inner loop simply by adding an `assert!` on the array length before the loop. I guess the compiler considers the specific error message that will be printed to be a side effect, so the assert moves that check to before the loop instead of at some point during the loop.