Modified FeedForward to allow set activation to whole Layer and added XOR test for FF

include/NeuralNetwork/FeedForward/Network.h

@@ -9,6 +9,8 @@
 #include <iomanip>
 #include <limits>
 
+#include <iostream>
+
 namespace NeuralNetwork {
 namespace FeedForward {
 
@@ -29,24 +31,27 @@ namespace FeedForward {
 				appendLayer(_inputSize);
 			};
 
-			Layer& appendLayer(std::size_t size=1) {
-				layers.push_back(Layer(size));
-
-				if(layers.size() > 1)
-					layers.back().setInputSize(layers[layers.size()-2].size());
-
-				return layers.back();
-			}
-
-			Layer& operator[](const std::size_t &id) {
-				return layers[id];
-			}
-
 			/**
 			 * @brief Virtual destructor for Network
 			 */
 			virtual ~Network() {
-			};
+				for(auto &layer:layers) {
+					delete layer;
+				}
+			}
+
+			Layer& appendLayer(std::size_t size=1, const ActivationFunction::ActivationFunction &activationFunction=ActivationFunction::Sigmoid(-4.9)) {
+				layers.push_back(new Layer(size,activationFunction));
+
+				if(layers.size() > 1)
+					layers.back()->setInputSize(layers[layers.size()-2]->size());
+
+				return *layers[layers.size()-1];//.back();
+			}
+
+			Layer& operator[](const std::size_t &id) {
+				return *layers[id];
+			}
 
 			/**
 			 * @brief  This is a function to compute one iterations of network
@@ -66,7 +71,7 @@ namespace FeedForward {
 					if(!first) {
 						out << ",";
 					}
-					out << layer;
+					out << *layer;
 					first=false;
 				}
 				out  << "]";
@@ -74,7 +79,7 @@ namespace FeedForward {
 			}
 
 		protected:
-			std::vector<Layer> layers;
+			std::vector<Layer*> layers;
 	};
 }
 }