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Update src/ch09-02-recoverable-errors-with-result.md

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Aaran Xu 2022-01-11 03:11:34 +08:00
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src/ch09-02-recoverable-errors-with-result.md
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@ -176,7 +176,7 @@ fn main() {
} }
``` ```
`expect` 与 `unwrap` 的使用方式一样：返回文件句柄或调用 `panic!` 宏。`expect` 用来调用 `panic!` 的错误信息将会作为参数传递给 `expect` ，而不像`unwrap` 那样使用默认的 `panic!` 信息。它看起来像这样： `expect` 与 `unwrap` 的使用方式一样：返回文件句柄或调用 `panic!` 宏。`expect` 在调用 `panic!` 时使用的错误信息将是我们传递给 `expect` 的参数，而不像`unwrap` 那样使用默认的 `panic!` 信息。它看起来像这样：
```text ```text
thread 'main' panicked at 'Failed to open hello.txt: Error { repr: Os { code: thread 'main' panicked at 'Failed to open hello.txt: Error { repr: Os { code: