1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <iterator> 11 12 // template<class T> 13 // struct iterator_traits<T*> 14 // { 15 // typedef ptrdiff_t difference_type; 16 // typedef T value_type; 17 // typedef T* pointer; 18 // typedef T& reference; 19 // typedef random_access_iterator_tag iterator_category; 20 // }; 21 22 #include <iterator> 23 #include <type_traits> 24 25 struct A {}; 26 27 int main() 28 { 29 typedef std::iterator_traits<A*> It; 30 static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), ""); 31 static_assert((std::is_same<It::value_type, A>::value), ""); 32 static_assert((std::is_same<It::pointer, A*>::value), ""); 33 static_assert((std::is_same<It::reference, A&>::value), ""); 34 static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), ""); 35 } 36
