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update(index-list): add Result

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pull/899/head
Allan Downey 3 years ago
parent fa77e88911
commit c7d98556a7
1 changed files with 14 additions and 8 deletions
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src/index-list.md
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@ -317,12 +317,16 @@
## R ## R
| 名称 | 关键字 | 简介 | | 名称 | 关键字 | 简介 |
| ------------ | ------ | ---------------------------------------------------------------------------------- | | ---------------------- | ---------- | ---------------------------------------------------------------------------------- |
| [Range 序列] | | 生成连续的数值<br> 只允许用于数字或字符类型<br> `..` 右半开区间 <br>`..=` 闭合区间 | | [Range 序列] | | 生成连续的数值<br> 只允许用于数字或字符类型<br> `..` 右半开区间 <br>`..=` 闭合区间 |
| | KWR | | | [Result 可恢复的错误] | 可恢复错误 | `enum Result<T, E> { Ok(T), Err(E), }` |
| [对返回的错误进行处理] | 可恢复错误 | 对返回的错误进行处理 |
| | KWR | |
[range 序列]: https://course.rs/basic/base-type/numbers.html#序列range [range 序列]: https://course.rs/basic/base-type/numbers.html#序列range
[result 可恢复的错误]: https://course.rs/basic/result-error/result.html#可恢复的错误-result
[对返回的错误进行处理]: https://course.rs/basic/result-error/result.html#对返回的错误进行处理
[back](#head) [back](#head)
@ -381,12 +385,14 @@
## U ## U
| 名称 | 关键字 | 简介 | | 名称 | 关键字 | 简介 |
| ------------------ | ---------- | ------------------------------------------- | | ------------------ | ---------- | ----------------------------------------------------------------- |
| [Unit-like Struct] | 单元结构体 | 没有任何字段和属性<br>`struct AlwaysEqual;` | | [Unit-like Struct] | 单元结构体 | 没有任何字段和属性<br>`struct AlwaysEqual;` |
| | KWU | | | [unwrap & expect] | 可恢复错误 | 如果返回成功，就将 `Ok(T)` 中的值取出来，如果失败，就直接 `panic` |
| | KWU | |
[unit-like struct]: https://course.rs/basic/compound-type/struct.html#单元结构体unit-like-struct [unit-like struct]: https://course.rs/basic/compound-type/struct.html#单元结构体unit-like-struct
[unwrap & expect]: https://course.rs/basic/result-error/result.html#失败就-panic-unwrap-和-expect
[back](#head) [back](#head)

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