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 (2025-10-09 18:01:25 GIT hash 4826e516431c193e428991dd546a46472973d8d4 built by fridi@fzen)
before the call to `expand` as well as for indices that where initialized
via a call to `put` afterwards.