mutability exercise

main.rs

struct Foo {
    pub foo: Vec<isize>,
}

impl Foo {
    pub fn get_foo(&self) -> &Vec<isize> {
        return &self.foo;
    }

    pub fn get_foo_mut(&mut self) -> &mut Vec<isize> {
        return &mut self.foo;
    }
}

fn main() {
    let a = Foo{foo: vec![1,2,3,4,5]};

    for y in a.get_foo() {
        print!("{} ", y);
    }
    println!();

    for x in a.get_foo_mut() {
        print!("{} ", x);
    }
    println!();
}