摘要: fn main() { // `let mut var`: mutable binding let mut i = 5; i = 6; // 整体替换 println!("i: i32= {}", i); let mut s = String::from("Hi"); s = String::fro 阅读全文
posted @ 2025-09-16 15:39 ZhengQC 阅读(10) 评论(0) 推荐(0)