机械工业版P159 Cell示例, Line 6出现不存的vdata变量

[huangjj27]

use std::cell::Cell;
fn main() {
    let data: Cell<i32> = Cell::new(100);
    let p = &data;
    vdata.set(10);  // `vdata` should be `data`?
    println!("{}", p.get());

    p.set(20);
    println!("{:?}", data);
}

[F001]

谢谢，确实如此