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fix typo #141

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Nov 13, 2020
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fix typo #141

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2 changes: 1 addition & 1 deletion book/zh-cn/03-runtime.md
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Expand Up @@ -550,7 +550,7 @@ constexpr _Tp&& forward(typename std::remove_reference<_Tp>::type&& __t) noexcep
可见 `std::forward` 的原理在于巧妙的利用了模板类型推导中产生的差异。

这时我们能回答这样一个问题：为什么在使用循环语句的过程中，`auto&&` 是最安全的方式？
因为当 `auto` 被推到为不同的左右引用时，与 `&&` 的坍缩组合是完美转发。
因为当 `auto` 被推导为不同的左右引用时，与 `&&` 的坍缩组合是完美转发。

## 总结

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