type User = (
    id: int,
    name: str,
)


user := {
    user_id := 0
    all_users := []User

    (
        get_all: fn() -> [User] { all_users },
        new: fn(name: str) -> User {
            data := (id: { user_id = user_id + 1 }, name:)
            all_users.append(data)
            data
        },
        fmt: fn(user: User) -> str {
            user.name + "(" + str(user.id) + ")"
        }
    )
}

abe := user.new("abe")
lincoln := user.new("lincoln")

println(abe)
println(lincoln)