Rust already supports partially deinitialized structs - that is, moving out of a struct field by field - and there’s no fundamental reason it can’t support part

Rust already supports partially deinitialized structs - that is, moving out of a struct field by field - and there’s no fundamental reason it can’t support partial initialization too. Indeed, there’s an open issue for it: https://github.com/rust-lang/rust/issues/54987 https://github.com/rust-lang/rust/issues/54987 But there are a lot of desired features with open issues, so don’t expect this to be implemented anytime soon unless someone takes an interest in it.