Made a tensor iterable

dlib/dnn/tensor.h

@@ -35,6 +35,13 @@ namespace dlib
         long nc() const { return m_nc; }
         size_t size() const { return data.size(); }
 
+        typedef float* iterator;
+        typedef const float* const_iterator;
+        iterator       begin()       { return host(); }
+        const_iterator begin() const { return host(); }
+        iterator       end()         { return host()+size(); }
+        const_iterator end() const   { return host()+size(); }
+
         void async_copy_to_device() const
         {
             data.async_copy_to_device();

dlib/dnn/tensor_abstract.h

@@ -98,6 +98,17 @@ namespace dlib
                       async_copy_to_device() and then immediately call device().
         !*/
 
+        typedef float* iterator;
+        typedef const float* const_iterator;
+        iterator       begin()       { return host(); }
+        const_iterator begin() const { return host(); }
+        iterator       end()         { return host()+size(); }
+        const_iterator end() const   { return host()+size(); }
+        /*!
+            ensures
+                - makes a tensor iterable just like the STL containers.   
+        !*/
+
         const float* host(
         ) const;
         /*!