fn main() { let mut a = Some(1); if let &mut Some(x) = &mut a { println!("{:?}", x); } if let Some(y) = &mut a { *y = 2; println!("{:?}", y); } if let z = &mut a { *z = Some(3); println!("{:?}", z); } }
1 ila 2020-09-15 20:31:15 +08:00 via Android 代码 timeout 了吗 |
2 zephoony 2020-12-04 09:32:27 +08:00 编译不过去 |