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digitalmars.D - Dense storage of elements of D's builtin associative arrays (AAs)

Would it be relevant to change D's AA implementation to use dense 
storage of its elements instead of to individual bucket storage?

I'm guessing not because

1. pointer returned by `in`-operator
2. range returned by `byKey`, `byValue`, and `byKeyValue`?

may indefinitely outlive the current store upon grow-reallocation 
potentially causing massively fragmented memory of previous 
stores.
Jul 30 2020