Hi, I wrote an arena-like structure called Repo, that can store any amount of Any type values. The crate is called repository.
I also supplied EntityPtr as typed pointers and EntityId as untyped pointers for values within a Repo creating complex maybe circular data structures.
I'd like to hear some feedback on this:
Also there's some non-English introductory material about it at below address, though I'm not sure whether webpage translation can work well enough here.