Added set_num_outputs() to fc_ layer.

dlib/dnn/layers.h

@@ -1448,6 +1448,17 @@ namespace dlib
         unsigned long get_num_outputs (
         ) const { return num_outputs; }
 
+        void set_num_outputs(long num) 
+        {
+            DLIB_CASSERT(num > 0);
+            if (num != num_outputs)
+            {
+                DLIB_CASSERT(get_layer_params().size() == 0, 
+                    "You can't change the number of filters in fc_ if the parameter tensor has already been allocated.");
+                num_outputs = num;
+            }
+        }
+
         fc_bias_mode get_bias_mode (
         ) const { return bias_mode; }
 

dlib/dnn/layers_abstract.h

@@ -475,6 +475,19 @@ namespace dlib
                     - The rest of the dimensions of T will be 1.
         !*/
 
+        void set_num_outputs(
+            long num
+        );
+        /*!
+            requires
+                - num > 0
+                - get_layer_params().size() == 0 || get_num_outputs() == num
+                  (i.e. You can't change the number of outputs in fc_ if the parameter
+                  tensor has already been allocated.)
+            ensures
+                - #get_num_outputs() == num
+        !*/
+
         fc_bias_mode get_bias_mode (
         ) const;
         /*!