@cec7b4fa To be honest I don't like this behavior in Julia because you normally don't specify the return type in Julia. Therefore, it can happen that you return something by mistake.
If you want to return nothing, you have to literally add "return nothing" to the end of the body because semicolons are also not common in Julia.

But with Rust, there are no surprises ;) 

 @5150cec1 thank you very much! This add another piece to clarify these concepts 😁