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Co-authored-by: Yi Yang <qingfeng.yy@alibaba-inc.com>
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猫耳堀川雷鼓 2021-03-13 21:28:39 +08:00 committed by GitHub
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@ -262,5 +262,4 @@ Widget makeWidget(Widget w)
- 最后一次使用时，在右值引用上使用`std::move`，在通用引用上使用`std::forward`。
- 对按值返回的函数要返回的右值引用和通用引用，执行相同的操作。
- 如果局部对象适合返回值优化，就不要使用`std::move`或者`std::forward`。
- 如果局部对象可以被返回值优化消除，就绝不使用`std::move`或者`std::forward`。