alt Hacker NewsA few other langs have it too. It's just something to return when no return is actually possible. And then it can propagate, so it makes some nice things possible that weren't before.
A few other langs have it too. It's just something to return when no return is actually possible. And then it can propagate, so it makes some nice things possible that weren't before.
Without looking up the Rust implementation I would hazard a guess that it is loose language to say "something to return when no return is actually possible" because if it is anything like the Bottom Type then there is no something that is being returned which is what this function signature indicates. Generally used for exception handling or intentional infinite loops (in both cases the function does not return from whence it came) … please correct me if I'm wrong here …