Question

I want a pair<A,B>*. make_pair(a,b) will give me a pair<A,B> (note the pair isn’t a pointer). Is there a standard way to make a pair pointer? I tried adding new before after and in between the two words and it doesn’t appear to exist.

Answer 1

There isn’t. You can roll your own:

template<typename X, typename Y>
std::pair<typename std::decay<X>::type, typename std::decay<Y>::type>*
heap_pair(X&& x, Y&& y) {
  typedef typename std::decay<X>::type decayed_X;
  typedef typename std::decay<Y>::type decayed_Y;
  return new std::pair<decayed_X, decayed_Y>(
    std::forward<X>(x),
    std::forward<Y>(y)
  );
}

But you might want to add allocator customization to it.