CPP/STL/ForEach - Revision history

Daviddoria at 17:16, 20 September 2011

2011-09-20T17:16:02Z

Daviddoria at 13:19, 26 February 2011

2011-02-26T13:19:53Z

FirstPerson: Created page with ' #include #include #include using namespace std; void showSquaredValue(const int n){ cout << n << "*" << n << " = " …'

2010-07-07T03:37:11Z

Created page with '<source lang = "cpp"> #include <iostream> #include <algorithm> #include <vector> using namespace std; void showSquaredValue(const int n){ cout << n << "*" << n << " = " …'

New page

<source lang = "cpp">

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

void showSquaredValue(const int n){
cout << n << "*" << n << " = " << n*n << endl;
};

class RepeatSequence{
int begin, end;
int offset;
public:
RepeatSequence(int first, int last): begin(first),end(last - 1), offset(begin - 1){}
RepeatSequence(): begin(),end(), offset(){}
int operator()(){
return offset = offset >= end ? begin: offset + 1;
}
};

int main(){
vector<int> num;
const int MAX = 10;

std::generate_n(std::back_insert_iterator<vector<int>>( num ),
MAX,
RepeatSequence(0,5)
);

//for each values in the vector num, show its squared value
std::for_each(num.begin(),num.end(),showSquaredValue);

return 0;
}</source>

@@ Line 26: / Line 26: @@
    return 0;
+}
 </source>

@@ Line 1: / Line 1: @@
 <source lang = "cpp">
 #include <iostream>
 #include <algorithm>
 #include <vector>
-using namespace std;
+struct printFunctor
-−
+{
-void showSquaredValue(const int n){
+  void operator() (int x)
-	cout  <<  n << "*" << n  << " = " << n*n << endl;
 };
-class RepeatSequence{
+int main()
-	int begin, end;
-	int offset;
+  std::vector<int> v;
-public:
+  v.push_back(1);
-	RepeatSequence(int first, int last): begin(first),end(last - 1), offset(begin - 1){}
+  v.push_back(2);
-	RepeatSequence(): begin(),end(), offset(){}
+  v.push_back(3);
-	int operator()(){
-		return offset = offset >= end ? begin: offset + 1;
-−
-};
-int main(){
+  printFunctor myPrint;
- vector<int> num;
+  std::for_each(v.begin(), v.end(), myPrint);
- const int MAX = 10;
-−
- std::generate_n(std::back_insert_iterator<vector<int>>( num ),
-		 MAX,
-		 RepeatSequence(0,5)
-		);
- //for each values in the vector num, show its squared value
+  return 0;
- std::for_each(num.begin(),num.end(),showSquaredValue);
-  return 0;
+==CMakeLists.txt==
-}</source>
+<source lang="cmake">