If you don't need to change it, use const reference.

如果你不需要改变它，使用常量引用。

youdao

Will temporary object be deleted if there is no const reference to it?

将临时对象，如果没有引用它删除？

youdao

Will temporary object be deleted if there is no const reference to it?

将临时对象，如果没有引用它删除？

youdao