Removed "using namespace std" statements from header files in EO -- "std::" identifier were added where necessary.

eo/tutorial/Lesson2/FirstBitEA.cpp

@@ -15,6 +15,9 @@
 #include <eo>
 #include <ga.h>
 
+// Use functions from namespace std
+using namespace std;
+
 // REPRESENTATION
 //-----------------------------------------------------------------------------
 // define your individuals

eo/tutorial/Lesson2/FirstRealEA.cpp

@@ -20,6 +20,9 @@
 // define your individuals
 typedef eoReal<double> Indi;	
 
+// Use functions from namespace std
+using namespace std;
+
 // EVALFUNC
 //-----------------------------------------------------------------------------
 // a simple fitness function that computes the euclidian norm of a real vector

eo/tutorial/Lesson2/binary_value.h

@@ -7,7 +7,7 @@
     @param _chrom A binary chromosome 
 */
 // INIT
-double binary_value(const vector<bool>& _chrom)
+double binary_value(const std::vector<bool>& _chrom)
 {
   double sum = 0;
   for (unsigned i = 0; i < _chrom.size(); i++)

eo/tutorial/Lesson2/exercise2.3.cpp

@@ -31,6 +31,8 @@ typedef eoBit<double> Indi;	// A bitstring with fitness double
 // GENERAL
 //-----------------------------------------------------------------------------
 
+using namespace std;
+
 void main_function(int argc, char **argv)
 {
 // PARAMETRES