嵌套数据结构的Rust可变性

struct Outer {
    inner: Vec<Inner>,
}

struct Inner {
    value: i32,
}

fn main() {
    let mut outer = Outer {
        inner: vec![
            Inner { value: 1 },
            Inner { value: 2 },
            Inner { value: 3 },
        ],
    };

    // 修改嵌套结构中的值
    for inner in &mut outer.inner {
        inner.value += 10;
    }

    // 打印修改后的值
    for inner in &outer.inner {
        println!("Value: {}", inner.value);
    }
}

use std::cell::RefCell;

struct Outer {
    inner: RefCell<Vec<Inner>>,
}

struct Inner {
    value: i32,
}

fn main() {
    let outer = Outer {
        inner: RefCell::new(vec![
            Inner { value: 1 },
            Inner { value: 2 },
            Inner { value: 3 },
        ]),
    };

    // 获取内部向量的可变引用
    let mut inner_vec = outer.inner.borrow_mut();
    for inner in &mut *inner_vec {
        inner.value += 10;
    }

    // 打印修改后的值
    for inner in outer.inner.borrow().iter() {
        println!("Value: {}", inner.value);
    }
}