Shared via Rust Playground

playground.rs

struct Element {
    x: u8
}

impl Element {
    pub fn inc(&mut self, container: &Container) {
        self.x = self.x + 1;
    }
}

struct Container {
    v: Vec<Element>
}

impl Container {
    
    /*
    pub fn inc_all_elem(&mut self) {
        for e in self.v {
            e.inc();
        }
    }
    */
    pub fn inc_all_elem(&mut self) {
        for e in self.v.iter_mut() {
            e.inc(self);
        }
    }
}

fn main() {
    let mut container = Container {
        v: vec!(Element{x:1})
    };
    
    container.inc_all_elem();
    println!("container.v[0] = {}", container.v[0].x);
}