commit 2025-10-22 19:59 add ZtCObjtChain::SetDataRecur() ZCppMain/ZMainHead.H

ZCppMain/ZMainHead.H

@@ -3613,7 +3613,43 @@ namespace ZNsMain
         () 을 재정의해서, () 을 필요한 만큼 겹겹이 호출해서 접근하도록 했다.
         아래 예제:202510200053 참고.
 
-        ZtCObjtChain<TDataNow, ZCEmpty>::TypeChainLast 을 추가해,
+    ■  아래 멈버 함수를 추가하고
+
+            template<typename TDataHere>
+            TypeChainNow  & operator=  (const TDataHere& AR_Data)
+                {                     return *this;}
+            TypeChainNow  & operator=  (const TypeData & AR_Data)
+                { mo_TypeVar=AR_Data; return *this;}
+
+          이를 활용하는 SetDataRecur() 
+
+              template<int TTypNo, typename TDataHere>
+                  bool SetDataRecur(const TDataHere& AR_Data)
+
+          를 추가. 그래서 이런 예제가 가능하다.
+
+              typedef ZtCObjtChain
+              <
+                  char  , ZtCObjtChain<
+                  string, ZtCObjtChain<
+                  double, ZtCObjtChain<
+                  int   ,
+                  ZCEmpty > > >
+              > ZCObjtChain;  ZCObjtChain VO_ZCObjtChain;
+
+              VO_ZCObjtChain="New3 Str";
+              VO_ZCObjtChain='B';
+              VO_ZCObjtChain.SetDataRecur<4>('D');
+              VO_ZCObjtChain.SetDataRecur<3>(string("New3 Str"));
+              VO_ZCObjtChain.SetDataRecur<2>(0.8);
+              VO_ZCObjtChain.SetDataRecur<1>(9999);
+
+          와, 멤버 변수 변경이 이렇게 깔끔하게 될 수 있다니...
+          C++ 진짜 멋지다!
+
+          -- 2025-10-22 19:41
+
+    ■  ZtCObjtChain<TDataNow, ZCEmpty>::TypeChainLast 을 추가해,
 
            마지막 TypeChainNext 즉 마지막 TypeChainNow
 
@@ -3679,12 +3715,23 @@ namespace ZNsMain
         *VO_ZCObjtChain()()   =0.8      ;
         *VO_ZCObjtChain()()() =1234     ;
         VO_ZCObjtChain.IterHead(VO_ZCTypeView);
+        cout<<"************************************"<<endl;
 
         VO_ZCObjtChain.GetData<ZCObjtChain>()='X';
         VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext>()="New2 Str";
         VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext::TypeChainNext>()=0.9;
         VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext::TypeChainNext::TypeChainNext>()=4321;
         VO_ZCObjtChain.IterHead(VO_ZCTypeView);
+        cout<<"************************************"<<endl;
+
+        VO_ZCObjtChain="New3 Str";
+        VO_ZCObjtChain='B';
+        VO_ZCObjtChain.SetDataRecur<4>('D');
+        VO_ZCObjtChain.SetDataRecur<3>(string("New3 Str"));
+        VO_ZCObjtChain.SetDataRecur<2>(0.8);
+        VO_ZCObjtChain.SetDataRecur<1>(9999);
+        VO_ZCObjtChain.IterHead(ZftMCP(VO_ZCTypeView));
+        cout<<"************************************"<<endl;
 
     ///////////////////////////////////////////////////////////////////*/
 
@@ -3732,6 +3779,29 @@ namespace ZNsMain
             { return static_cast<TypeChainNext&>(*this); }
         TypeChainNextC& operator()  () const
             { return static_cast<TypeChainNext&>(*this); }
+
+        template<typename TDataHere>
+        TypeChainNow  & operator=  (const TDataHere& AR_Data)
+            { /*:::::::::::::::*/ return *this;}
+        TypeChainNow  & operator=  (const TypeData & AR_Data)
+            { mo_TypeVar=AR_Data; return *this;}
+
+    /************************************************************/
+
+        template<int TTypNo, typename TDataHere>
+            bool SetDataRecur(const TDataHere& AR_Data)
+        {
+            if(TTypNo==TypeChainNow::ZETypeNo)
+                {*this=AR_Data; return true;}
+            if(TTypNo>TypeChainNow::ZETypeNo)
+                {/*::::::::::*/ return false;}
+
+            return this->TypeChainNext::template
+                SetDataRecur<TTypNo, TDataHere>(AR_Data);
+        }/*
+        template<int TTypNo, typename TDataHere>
+            bool SetDataRecur(const TDataHere& AR_Data) */
+
     /************************************************************/
 
         template<typename TTypeChainNext> typename
@@ -3858,6 +3928,24 @@ namespace ZNsMain
 
         TypeChainNext & operator()  ()      { return (*this); }
         TypeChainNextC& operator()  () const{ return (*this); }
+
+        template<typename TDataHere>
+        TypeChainNow  & operator=  (const TDataHere& AR_Data)
+            { /*:::::::::::::::*/ return *this;}
+        TypeChainNow  & operator=  (const TypeData & AR_Data)
+            { mo_TypeVar=AR_Data; return *this;}
+    /************************************************************/
+
+        template<int TTypNo, typename TDataHere>
+            bool SetDataRecur(const TDataHere& AR_Data)
+        {
+            if(TTypNo==TypeChainNow::ZETypeNo)
+                {*this=AR_Data; return true ;}
+                {/*::::::::::*/ return false;}
+        }/*
+        template<int TTypNo, typename TDataHere>
+            bool SetDataRecur(const TDataHere& AR_Data) */
+
     /************************************************************/
 
         template<typename TTypeChainNext> TypeData & GetData()

ZCppMainTest/c++_test_006.cpp

@@ -186,6 +186,40 @@ namespace ZNsMain
             cout<<"************************************"<<endl;
 
 
+            typedef ZtCObjtChain
+            <
+                char  , ZtCObjtChain<
+                string, ZtCObjtChain<
+                double, ZtCObjtChain<
+                int   ,
+                ZCEmpty > > >
+            > ZCObjtChain;  ZCObjtChain VO_ZCObjtChain;
+
+            VO_ZCObjtChain.GetChainNext().GetData()="abc";
+            *VO_ZCObjtChain       ='Z'      ;
+            *VO_ZCObjtChain()     ="New Str";
+            *VO_ZCObjtChain()()   =0.8      ;
+            *VO_ZCObjtChain()()() =1234     ;
+            VO_ZCObjtChain.IterHead(ZftMCP(VO_ZCTypeView));
+            cout<<"************************************"<<endl;
+
+            VO_ZCObjtChain.GetData<ZCObjtChain>()='X';
+            VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext>()="New2 Str";
+            VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext::TypeChainNext>()=0.9;
+            VO_ZCObjtChain.GetData<ZCObjtChain::TypeChainNext::TypeChainNext::TypeChainNext>()=4321;
+            VO_ZCObjtChain.IterHead(ZftMCP(VO_ZCTypeView));
+            cout<<"************************************"<<endl;
+
+            VO_ZCObjtChain="New3 Str";
+            VO_ZCObjtChain='B';
+            VO_ZCObjtChain.SetDataRecur<4>('D');
+            VO_ZCObjtChain.SetDataRecur<3>(string("New3 Str"));
+            VO_ZCObjtChain.SetDataRecur<2>(0.8);
+            VO_ZCObjtChain.SetDataRecur<1>(9999);
+            VO_ZCObjtChain.IterHead(ZftMCP(VO_ZCTypeView));
+            cout<<"************************************"<<endl;
+
+
             typedef ZtCDataRing<std::string> ZCDataRing;
 
             ZCDataRing VO_CDataRing = string("123");