diff --git a/testHasttable/singletonbase.h b/testHasttable/singletonbase.h
index b9abb72..0183241 100644
--- a/testHasttable/singletonbase.h
+++ b/testHasttable/singletonbase.h
@@ -4,8 +4,7 @@
 //做一个单例
 #include <QHash>
 
-
-template<typename KeyType,typename ValueType>
+template<typename KeyType,typename ValueType,typename ChildType>
 class SingletonBase
 {
 public:
@@ -13,20 +12,26 @@ public:
 //    ~SingletonBase();
     void add(const KeyType& key,const ValueType& val)
     {
-        this->ht[key]=val;
+        QHash<KeyType,ValueType> *t=SingletonBase<KeyType,ValueType,ChildType>::ht;
+        (*t)[key]=val;
     }
     bool contains(const KeyType& key)
     {
-        return this->ht->contains(key);
+        return SingletonBase<KeyType,ValueType,ChildType>::ht->contains(key);
     }
     ValueType get(const KeyType& key)
     {
-        return this->ht[key];
+        QHash<KeyType,ValueType> *t=SingletonBase<KeyType,ValueType,ChildType>::ht;
+        return (*t)[key];
     }
-
     void initInstance()
     {
-        if()
+        if(SingletonBase<KeyType,ValueType,ChildType>::ht)
+        {
+            delete SingletonBase<KeyType,ValueType,ChildType>::ht;
+            SingletonBase<KeyType,ValueType,ChildType>::ht==NULL;
+        }
+        SingletonBase<KeyType,ValueType,ChildType>::ht=new QHash<KeyType,ValueType>;
     }
 protected:
 
@@ -43,4 +48,8 @@ protected:
     static QHash<KeyType,ValueType> *ht;
 };
 
+
+template<typename KT,typename VT,typename CT>
+QHash<KT,VT> *SingletonBase<KT,VT,CT>::ht=NULL;
+
 #endif // SINGLETONBASE_H