Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
template <class T>
struct is_rvalue_reference : public true_type-or-false_type {};
Inherits: If T is an rvalue reference type then inherits from true_type, otherwise inherits from false_type.
C++ Standard Reference: 3.9.2 and 8.3.2.
Compiler Compatibility: All current compilers are supported by this trait.
Header: #include
<boost/type_traits/is_rvalue_reference.hpp>
or #include <boost/type_traits.hpp>
Examples:
is_rvalue_reference<int&&>inherits fromtrue_type.
is_rvalue_reference<int const&&>::typeis the typetrue_type.
is_rvalue_reference<int const&>::typeis the typefalse_type.
is_rvalue_reference<int (&&)(long)>::valueis an integral constant expression that evaluates to true (the argument in this case is an rvalue reference to a function).
is_rvalue_reference<T>::value_typeis the typebool.