实现TryFrom我应该使用&str还是字符串

use std::convert::TryFrom;

struct MyStruct {
    value: i32,
}

impl TryFrom<&str> for MyStruct {
    type Error = ();

    fn try_from(value: &str) -> Result<Self, Self::Error> {
        // 解析字符串并创建MyStruct实例
        match value.parse::<i32>() {
            Ok(parsed_value) => Ok(MyStruct { value: parsed_value }),
            Err(_) => Err(()),
        }
    }
}

fn main() {
    let value = "42";
    let my_struct = MyStruct::try_from(value).unwrap();
    println!("MyStruct value: {}", my_struct.value);
}