I love this pattern! I make use of it all the time in Rust with the slotmap library. Improves upon arrays by versioning the indexes so values can be deleted wit

I love this pattern! I make use of it all the time in Rust with the slotmap library. Improves upon arrays by versioning the indexes so values can be deleted without messing up existing indexes and the space can be reused without returning incorrect values for old indexes.