摘要: collect nth函数 let a = [1, 2, 3]; let mut iter = a.iter(); assert_eq!(iter.nth(1), Some(&2)); assert_eq!(iter.nth(1), None); let a = [1, 2, 3]; assert_ 阅读全文
posted @ 2020-01-30 21:21 尘归风 阅读(5934) 评论(0) 推荐(0)