Merge pull request #867 from litao91/main

fix: typo in circle-self-ref/self-referential.md
pull/869/head
Sunface 3 years ago committed by GitHub
commit c68975f1ce
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@ -41,7 +41,7 @@ fn main(){
## 使用 Option
最简单的方式就是使用 `Opiton` 分两步来实现:
最简单的方式就是使用 `Option` 分两步来实现:
```rust
#[derive(Debug)]

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