有什么办法从闭包内部从函数返回吗？

我有以下简化代码：

fn f() -> i32 {
    let a = some_result.unwrap_or_else(|_| {
        return 1; // want to return this value from f <-------------
    });
}

我要返回值 1 $在这种特定的错误情况下，来自整个函数 f 的c $ c>，但我无法从封闭中找出方法。

I want to return the value 1 from the whole function f in this specific error case but I can't figure out how to do it from within a closure.

如果我改用 match 表达式，它的工作原理如下：

If I instead use a match expression, it works fine as follows:

fn f() -> i32 {
    let a = match some_result {
        Ok(result) => result,
        Err(_)     => { return 1; },
    };
}

但是，由于我的琐碎 OK 匹配臂。

However, this makes the code verbose since I have the trivial Ok match arm.