摘要: 枚举 1 fn main() { 2 let a_binding; 3 { 4 let x = 2; 5 a_binding = x * x; 6 } 7 println!("a binding: {}", a_binding); 8 9 let sn = Some(5); 10 let ss = 阅读全文
posted @ 2020-12-11 15:41 天使不设防 阅读(276) 评论(0) 推荐(0) 编辑