How to prevent a value from being moved?

Question

I\'m having a lot of fun trying to solve the robot simulator Exercism exercise, but I\'m facing a value moving problem for which I don\'t seem to be able to come up with an

Answer 1

Looking at the other users answers, you can actually do it with fold :

pub fn instructions(self, instructions: &str) -> Self {
    instructions.chars().fold(self, |robot, c| {
        match c {
            'L' => robot.turn_left(),
            'R' => robot.turn_right(),
            'A' => robot.advance(),
            _ => panic!("unexpected char")
        }
    })
}

It seems to keep moving back robot into the scope.