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, class U>
struct is_same : public true_type-or-false_type {};
Inherits: If T and U are the same types then inherits from true_type, otherwise inherits from false_type.
Header: #include
<boost/type_traits/is_same.hpp>
or #include <boost/type_traits.hpp>
Compiler Compatibility: All current compilers are supported by this trait.
Examples:
is_same<int, int>inherits fromtrue_type.
is_same<int, int>::typeis the typetrue_type.
is_same<int, int>::valueis an integral constant expression that evaluates to true.
is_same<int const, int>::valueis an integral constant expression that evaluates to false.
is_same<int&, int>::valueis an integral constant expression that evaluates to false.
is_same<T, T>::value_typeis the typebool.