diff --git a/Function.hpp b/Function.hpp
index 5fc6299..c670842 100644
--- a/Function.hpp
+++ b/Function.hpp
@@ -11,5 +11,16 @@ private:
     public:
         virtual Ret call(Args...) = 0;
     };
+
+    template <typename Fun>
+    class callable : public callable_base
+    {
+    private:
+        Fun _f;
+    public:
+        callable(Fun f):_f(f) {}
+        virtual Ret call(Args... args)
+        { return _f(std::forward<Args>(args)...); }
+    };
 public:
 };
\ No newline at end of file