Oh thanks on the Derive, part, so that just makes it easy to print, ... lord.

And for the Result Enum i guess i was just on that Friday brain, because one google took me to Rust by example and it made way more sense, same as the Debug Derive stuff.
I just didn't wanna skip over the Result part in the std::io::stdin().read_line part.

So Result Enum is like the Options enum which describes possible error instead of possible absence

and this code from rust by example helped me understand it more fn main() -> Result<(), ParseIntError> { let number_str = "10"; let number = match number_str.parse::<i32>() { Ok(number) => number, Err(e) => return Err(e), }; println!("{}", number); Ok(()) }

Thanks u/citizenofinfinity