fix: add namespaces to example executables

examples/BTCS_1D_proto_example.cpp

@@ -1,5 +1,8 @@
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
   // **************
   // **** GRID ****

examples/BTCS_2D_proto_example.cpp

@@ -1,5 +1,8 @@
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
   // EASY_PROFILER_ENABLE;
   // profiler::startListen();

examples/CRNI_2D_proto_example.cpp

@@ -1,5 +1,8 @@
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
   int row = 20;
   int col = 20;

examples/FTCS_1D_proto_example.cpp

@@ -1,6 +1,9 @@
 #include "tug/Boundary.hpp"
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
   // **************
   // **** GRID ****

examples/FTCS_2D_proto_closed_mdl.cpp

@@ -6,10 +6,13 @@
  *
  */
 
+#include <Eigen/Eigen>
 #include <cstdlib>
 #include <iostream>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
 
   int row = 64;

examples/FTCS_2D_proto_example.cpp

@@ -6,7 +6,10 @@
  *
  */
 
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
+
+using namespace Eigen;
 // #include <easy/profiler.h>
 // #define EASY_PROFILER_ENABLE ::profiler::setEnabled(true);
 

examples/FTCS_2D_proto_example_mdl.cpp

@@ -6,8 +6,11 @@
  *
  */
 
+#include <Eigen/Eigen>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+
 int main(int argc, char *argv[]) {
 
   // **************

examples/profiling_openmp.cpp

@@ -1,9 +1,13 @@
+#include <Eigen/Eigen>
 #include <chrono>
 #include <fstream>
 #include <iostream>
 #include <string>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+using namespace std;
+
 int main(int argc, char *argv[]) {
 
   int n[] = {2000};

examples/profiling_speedup.cpp

@@ -1,9 +1,13 @@
+#include <Eigen/Eigen>
 #include <chrono>
 #include <fstream>
 #include <iostream>
 #include <string>
 #include <tug/Simulation.hpp>
 
+using namespace Eigen;
+using namespace std;
+
 int main(int argc, char *argv[]) {
 
   int n[] = {2000};

examples/reference-FTCS_2D_closed.cpp

@@ -3,6 +3,7 @@
 #include <tug/Simulation.hpp>
 
 using namespace std;
+using namespace Eigen;
 
 int main(int argc, char *argv[]) {
   int row = 50;