template<classTy>structis_member_function_pointer; 参数 Ty 要查询的类型。 备注 如果类型 Ty是指向成员函数的指针或指向成员函数的cv-qualified指针,类型谓词的实例将为 true,否则为 false。 示例 C++ // std__type_traits__is_member_function_pointer.cpp// compile with: /EHsc#include<type_traits>#inclu...
is_member_pointer<trivial *> == false is_member_pointer<int trivial::*> == true is_member_pointer<int (functional::*)()> == true 需求 標頭:<type_traits> 命名空間:std 另請參閱 <type_traits> is_member_function_pointer 類別 is_member_object_pointer 類別 ...
// 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...
is_member_pointer<T>来判断类型是否是类成员指针,具体参见boost代码 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) ...
An instance of the type predicate holds true if the typeTyis a pointer to member object or acv-qualifiedpointer to member object, otherwise it holds false. Note thatis_member_object_pointerholds false ifTyis a pointer to member function. ...
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...
语法 C++ 复制 HRESULT get_isPointerToMemberFunction( BOOL* pRetVal); 参数 pRetVal [out] 指向指定此符号是否是指向成员函数的指针的 BOOL 的指针。 返回值 如果成功,则返回 S_OK;否则,返回 S_FALSE 或错误代码。 另请参阅 IDiaSymbol 反馈 此页面是否有帮助? 是 否 中文...
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 ...