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manpreet![Tuteehub forum best answer]()
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3 years ago
_x000D_ In the return statement, if you return a local variable, the expression is treated as an rvalue, and thus automatically moved. It is thus similar to: return std::move(p); It invokes the unique_ptr(unique_ptr&&) constructor. In the main function, bar() produces a temporary, which is an rvalue, and is also properly moved into the p in main.