(C++) std::copy

Example

include <map>

include <vector>

include <algorithm>

include <cassert>

include <iostream>


int main()
{
  const int size = 10;
  //Generate a std::map
  std::map<int,int> myMap;
  for (int i=0; i!=size; ++i) myMap[i] = i*i;
  //Generate a std::vector
  std::vector<std::pair<int,int> > myVector;
  myVector.resize(size);
  //Copy the std::map to the std::vector
  std::copy(myMap.begin(),myMap.end(),myVector.begin());
  assert(myVector.size()==10);
  //Display the std::vector
  for (int i=0; i!=10; ++i)
  {
    std::cout
      << myVector[i].first
      << " "
      << myVector[i].second
      << std::endl;
  }
}

References

• 1) Bjarne Stroustrup. The C++ Programming Language (3rd edition).ISBN: 0-201-88954-4. Chapter 18.12.1: 'Prefer algorithms to loops]].
• 2) Scott Meyers. Effective STL. ISBN: 0-201-74962-9. Item 43: 'Prefer algorithm calls over hand-written loops'