41#ifndef PB_DS_RB_TREE_NODE_AND_IT_TRAITS_HPP 
   42#define PB_DS_RB_TREE_NODE_AND_IT_TRAITS_HPP 
   52    template<
typename Key,
 
   55             template<
typename Node_CItr,
 
   68        typename types_traits<Key, Mapped, _Alloc, false>::value_type,
 
   69        typename tree_node_metadata_dispatch<Key, Mapped, Cmp_Fn, Node_Update,
 
   77    template<
typename Key,
 
   79             template<
typename Node_CItr,
 
   92      typename types_traits<Key, null_type, _Alloc, false>::value_type,
 
   93      typename tree_node_metadata_dispatch<Key, null_type, Cmp_Fn, Node_Update,
 
GNU extensions for policy-based data structures for public use.
Represents no type, or absence of type, for template tricks.
Binary search tree traits, primary template.
Tree traits class, primary template.