string - 是否有 String::chars 的自有版本？

Question

以下代码无法编译:

use std::str::Chars;

struct Chunks {
    remaining: Chars,
}

impl Chunks {
    fn new(s: String) -> Self {
        Chunks {
            remaining: s.chars(),
        }
    }
}

错误是:

error[E0106]: missing lifetime specifier
 --> src/main.rs:4:16
  |
4 |     remaining: Chars,
  |                ^^^^^ expected lifetime parameter

Chars不拥有它迭代的字符并且它不能超过 &str或 String它是从创建的。

是否有Chars 的自有版本？不需要生命周期参数还是我必须保留 Vec<char>和我自己的索引？

Answer 1

还有 owned-chars crate , 哪个

provides an extension trait for String with two methods, into_chars and into_char_indices. These methods parallel String::chars and String::char_indices, but the iterators they create consume the String instead of borrowing it.