is_enum 類別 is_final 類別 is_floating_point 類別 is_function 類別 is_fundamental 類別 is_integral 類別 is_invocable 類別 is_literal_type 類別 is_lvalue_reference 類別 is_member_function_pointer 類別 is_member_object_pointer 類別 is_member_pointer 類別 ...
template<class Ty> struct is_member_pointer; 參數Ty 查詢的型別。備註這個型別述詞的執行個體之型別,則 Ty 是指向成員函式或成員指標物件,或 cv-qualified 表單其中一個項目,否則會保留為 false。範例複製 // std_tr1__type_traits__is_member_pointer.cpp // compile with: /EHsc #include <type_tra...
template<class Ty> struct is_member_pointer; 参数 Ty 查询的类型。 备注 该类型特性的实例适合,如果类型 Ty 是指向成员函数或指向成员的指针的对象,或者 cv-qualified 窗体的其中一个元素,否则它包含错误。 示例 复制 // std_tr1__type_traits__is_member_pointer.cpp // compile with: /EHsc #include...
BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_member_pointer,T,::boost::is_member_function_pointer<T>::value) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,typename U,is_member_pointer,U T::*,true) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,typename U,is_member_pointer,U T::*c...
std::is_member_pointer is a UnaryTypeTrait. If T is pointer to non-static member object or a pointer to non-static member function, provides the member constant value equal true. For any other type, value is false. If the program adds specializations for std::is_member_pointer or ...
std::is_member_object_pointer 用法是 std::is_member_object_pointer<T>::value 或者 std::is_...
structRecord{inta;intb;};intRecord::*pa=&Record::a;// movQWORD PTR -8[rbp], 0intRecord:...
// is_member_function_pointer template<typename T> struct is_member_function_pointer : public false_type {}; template<typename T, typename Class, typename... Args> struct is_member_function_pointer<T (Class::*)(Args...)> : public true_type {}; template<typename T, typename Class, type...
std::is_member_function_pointer is a UnaryTypeTrait. Checks whether T is a non-static member function pointer. Provides the member constant value which is equal to true, if T is a non-static member function pointer type. Otherwise, value is equal to false. If the program adds ...
: is_member_function_pointer_helper< std::remove_cv_t<T> > #include <type_traits> class A { public: void member() { } }; int main() { // fails at compile time if A::member is a data member and not a function static_assert(std::is_member_function_pointer<decltype...