This won't be a big deal. The 0 key will be in the hash part, and the 1-#t keys will be in the array part. The language doesn't expose the distinction, so the

This won't be a big deal. The 0 key will be in the hash part, and the 1-#t keys will be in the array part. The language doesn't expose the distinction, so the loop-related awkwardness is limited to a tiny performance hit.