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Merge pull request #529 from Kibiandkimi/master
add editable to problem 4&6 in zh-CN/src/lifetime/advance.md
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@ -101,7 +101,7 @@ impl<'a> PartialEq<i32> for &'a T {
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这里只能使用更高级别的约束,因为引用的生命周期比函数上任何可能的生命周期参数都短。
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4. 🌟🌟🌟
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```rust
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```rust,editable
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/* 添加 HRTB 使下面代码正常运行! */
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fn call_on_ref_zero<'a, F>(f: F) where F: Fn(&'a i32) {
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let zero = 0;
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@ -237,7 +237,7 @@ struct Ref<'a, T> {
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## 艰难的练习
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6. 🌟🌟🌟🌟
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```rust
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```rust,editable
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/* 使下面代码正常运行 */
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struct Interface<'a> {
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manager: &'a mut Manager<'a>
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