I agree, while 'lock data not code' sounds good(that's what Rust does I think), container is a different story, it's by design mutable and unfit to lock as a da

I agree, while 'lock data not code' sounds good(that's what Rust does I think), container is a different story, it's by design mutable and unfit to lock as a data structure, container is not a pure data structure, it's a ADT that really works with data structure and its methods(algorithms) hands in hands, hard to split by any lock.