Result
enum Result<T, E>
The result of an operation that can fail: either success
(Ok) holding the produced value, or failure
(Err) holding the error.
Ok
Ok(T value),Err
Err(E error),unwrap
T unwrap<T, E: Printable>(Result<T, E>& result)Returns the success value, aborting with the error if the result is
Err.
void print<T: Printable, E: Printable>(Result<T, E>& result)Prints the given result.