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.
0.094dev (2025-07-10 15:41:47 GIT hash eafa42ae743de61b62f958948d7abb5fada7756f built by fridi@fzen)
before the call to `expand` as well as for indices that where initialized
via a call to `put` afterwards.