diff --git a/ZCppMain/ZtCStringEx.H b/ZCppMain/ZtCStringEx.H
index 13c6ec2..f14e4a6 100644
--- a/ZCppMain/ZtCStringEx.H
+++ b/ZCppMain/ZtCStringEx.H
@@ -8005,7 +8005,9 @@ namespace ZNsMain
 
         ZCStringEx& operator=(const TypeChar* APC_Data)
         {
-            (ZCStringBase&)(*this)=APC_Data; return *this;
+            if(this->data()==APC_Data)       {return *this;}
+
+            (ZCStringBase&)(*this)=APC_Data; {return *this;}
         }/*
         ZtCStringEx& operator=(const TypeChar* APC_Data)*/
 
@@ -8053,8 +8055,9 @@ namespace ZNsMain
             ml_ListBuffAllByte+=AL_Length;
 
             ((ZCStringBase&)mo_CStringListBuff).
-                    append( APC_AddData, AL_Length ) ;
-            return *this;
+                append(APC_AddData, AL_Length) ;
+
+            return *this; //////////////////////
         }/*
         ZCStringEx& AddList(const TypeChar* APC_AddData, TypeLength AL_Length)*/
 
@@ -8081,13 +8084,13 @@ namespace ZNsMain
         {
             if(AL_Length<1) return *this;
 
-            ml_ListBuffAllByte+=AL_Length;
+            ml_ListBuffAllByte += AL_Length;
 
             if(mo_CStringListBuff.size()<1)
                   ((ZCStringBase&)mo_CStringListBuff).append(APC_AddData, AL_Length);
             else  mo_CStringListBuff.GetTailData()   .append(APC_AddData, AL_Length);
 
-            return *this;
+            return *this; /////////////////
         }/*
         ZCStringEx& AddListTail(const TypeChar* APC_AddData, TypeLength AL_Length)*/