for_each c++

// for_each example
#include <iostream>     // std::cout
#include <algorithm>    // std::for_each
#include <vector>       // std::vector

void myfunction (int i) {  // function:
  std::cout << ' ' << i;
}

struct myclass {           // function object type:
  void operator() (int i) {std::cout << ' ' << i;}
} myobject;

int main () {
  std::vector<int> myvector;
  myvector.push_back(10);
  myvector.push_back(20);
  myvector.push_back(30);

  std::cout << "myvector contains:";
  for_each (myvector.begin(), myvector.end(), myfunction);
  std::cout << '\n';

  // or:
  std::cout << "myvector contains:";
  for_each (myvector.begin(), myvector.end(), myobject);
  std::cout << '\n';

  return 0;
}

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Trevor Judice 105 points

                                    template&lt;class InputIterator, class Function&gt;
  Function for_each(InputIterator first, InputIterator last, Function fn)
{
  while (first!=last) {
    fn (*first);
    ++first;
  }
  return fn;      // or, since C++11: return move(fn);
}

Thank you! 0

Heejoo 65 points

                                    for_each( InputIt first, InputIt last, UnaryFunction f );
//Example
vector&lt;int&gt; v{ 1, 2, 3, 4, 5 };
for_each(v.begin(), v.end(), [](int i) { cout&lt;&lt;i&lt;&lt;&quot; &quot;&lt;&lt;endl; });

Thank you! 3

4 (3 Votes)

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