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

eo/tutorial/Lesson3/SecondBitEA.cpp

@@ -16,6 +16,9 @@
 #include <eo>
 #include <ga.h>
 
+// Use functions from namespace std
+using namespace std;
+
 // EVAL
 #include "binary_value.h"
 

eo/tutorial/Lesson3/SecondRealEA.cpp

@@ -22,6 +22,9 @@
 // define your individuals
 typedef eoReal<eoMinimizingFitness> 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/Lesson3/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/Lesson3/exercise3.1.cpp

@@ -25,6 +25,8 @@
 // define your genotype and fitness types
 typedef eoBit<eoMinimizingFitness> Indi;
 
+using namespace std;
+
 // the main_function: nothing changed(!), except variable initialization
 void main_function(int argc, char **argv)
 {