template<typename T, typename CMP>
void OrderedCollection<T, CMP>::insert(T value)
{
   iterator ptr = begin();
   while (ptr != end())
   {
      if (comparator(value, *ptr))
      {
         // Found place to insert
         data.insert(ptr, value);
         return;
      }
      ++ptr;
   }
   // Insert at end
   data.insert(ptr, value);
}