I use these extensions to "for_each" alot. You can add them to your list if you want. template<typename _InIt, typename _InIt2, typename _Fn1> inline _Fn1 for_each(_InIt _First, _InIt _Last, _InIt2 _First2, _Fn1 _Func) { for (; _First != _Last; ++_First,++_First2) _Func(*_First,*_First2); return (_Func); } template<typename _InIt, typename _InIt2, typename _InIt3, typename _Fn1> inline _Fn1 for_each(_InIt _First, _InIt _Last, _InIt2 _First2, _InIt3 _First3, _Fn1 _Func) { for (; _First != _Last; ++_First,++_First2,++_First3) _Func(*_First, *_First2, *_First3); return (_Func); } template<typename _InIt, typename _InIt2, typename _InIt3, typename _InIt4, typename _Fn1> inline _Fn1 for_each(_InIt _First, _InIt _Last, _InIt2 _First2, _InIt3 _First3, _InIt4 _First4, _Fn1 _Func) { for (; _First != _Last; ++_First,++_First2,++_First3,++_First4) _Func(*_First, *_First2, *_First3, *_First4); return (_Func); } template<typename _InIt, typename _InIt2, typename _InIt3, typename _InIt4, typename _InIt5, typename _Fn1> inline _Fn1 for_each(_InIt _First, _InIt _Last, _InIt2 _First2, _InIt3 _First3, _InIt4 _First4, _InIt5 _First5, _Fn1 _Func) { for (; _First != _Last; ++_First,++_First2,++_First3,++_First4,++_First5) _Func(*_First, *_First2, *_First3, *_First4, *_First5); return (_Func); }