get element at index `i`. This can be used to get elements that existed before the call to `expand` as well as for indices that where initialized via a call to `put` afterwards.
0.095dev (2025-08-15 12:02:22 GIT hash 301b5b75e77076d091b38f555473f9f0e31e5b5c built by fridi@fzen)
before the call to `expand` as well as for indices that where initialized
via a call to `put` afterwards.