diff --git a/paddle/framework/variable.h b/paddle/framework/variable.h
index b33e10e6820129a874f5355d14d8a3e990186025..72c4a7a2a1d1cf93a784f24e687727ee8481484c 100644
--- a/paddle/framework/variable.h
+++ b/paddle/framework/variable.h
@@ -25,21 +25,24 @@ class Variable {
  public:
   template <typename T>
   const T& Get() const {
-    PADDLE_ASSERT(holder_ != nullptr);
-    PADDLE_ASSERT(std::type_index(typeid(T)) ==
-                  std::type_index(holder_->Type()));
+    PADDLE_ASSERT(IsType<T>());
     return *static_cast<const T*>(holder_->Ptr());
   }
 
   template <typename T>
   T* GetMutable() {
-    if (holder_ == nullptr ||
-        std::type_index(typeid(T)) != std::type_index(holder_->Type())) {
+    if (!IsType<T>()) {
       holder_.reset(new PlaceholderImpl<T>(new T()));
     }
     return static_cast<T*>(holder_->Ptr());
   }
 
+  template <typename T>
+  bool IsType() const {
+    return holder_ != nullptr &&
+           std::type_index(typeid(T)) == std::type_index(holder_->Type());
+  }
+
  private:
   struct Placeholder {
     virtual ~Placeholder() {}