30 авг. 2010 г. · An rvalue is a prvalue or an xvalue. The following diagram illustrates the relationships between the categories: Diagram of C++ expression value ...

5 нояб. 2019 г. · The basic categories are lvalue, xvalue, prvalue and those are mutually exclusive. The categories "glvalue" and "rvalue" are collective terms.

11 апр. 2016 г. · To answer the titular question, "rvalue reference" is a kind of type, while "xvalue" is a kind of expression.

3 июн. 2018 г. · A xvalue is a lvalue (it refers to an object) that can be consumed because it's going away or because nobody cares about it anymore.

20 июл. 2012 г. · The expressions f(), f().m, static_cast<A&&>(a), and a + a are xvalues. The expression ar is an lvalue. There are two common ways to get an xvalue expression.

6 нояб. 2016 г. · I have few questions: 1) In WrapperOfGetObj function, Wrapobj is xvalue, so can I assign value to any member of it (xvalue - going to expire!!)

19 нояб. 2021 г. · If an xvalue is a value that is at the end of its lifetime, what is a named rvalue reference if not an lvalue or xvalue (because it is not expiring and is ...

25 июн. 2020 г. · A prvalue of type T can be converted to an xvalue of type T . This conversion initializes a temporary object ( [class.temporary] ) of type T ...

10 июн. 2018 г. · The xvalue does have an identity, but there's a separate rule in the language that a unary & -expression requires an lvalue operand.

29 янв. 2018 г. · std::move() converts an expression from being an lvalue or rvalue to being an xvalue. An lvalue is an object occupies some location in ...