boost/libs/container/example/doc_recursive_containers.cpp

//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2009-2013. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
//[doc_recursive_containers
#include <boost/container/vector.hpp>
#include <boost/container/stable_vector.hpp>
#include <boost/container/deque.hpp>
#include <boost/container/list.hpp>
#include <boost/container/map.hpp>
#include <boost/container/string.hpp>

using namespace boost::container;

struct data
{
   int               i_;
   //A vector holding still undefined class 'data'
   vector<data>      v_;
   vector<data>::iterator vi_;
   //A stable_vector holding still undefined class 'data'
   stable_vector<data> sv_;
   stable_vector<data>::iterator svi_;
   //A stable_vector holding still undefined class 'data'
   deque<data> d_;
   deque<data>::iterator di_;
   //A list holding still undefined 'data'
   list<data>        l_;
   list<data>::iterator li_;
   //A map holding still undefined 'data'
   map<data, data>   m_;
   map<data, data>::iterator   mi_;

   friend bool operator <(const data &l, const data &r)
   { return l.i_ < r.i_; }
};

struct tree_node
{
   string name;
   string value;

   //children nodes of this node
   list<tree_node>            children_;
   list<tree_node>::iterator  selected_child_;
};



int main()
{
   //a container holding a recursive data type
   stable_vector<data> sv;
   sv.resize(100);

   //Let's build a tree based in
   //a recursive data type
   tree_node root;
   root.name  = "root";
   root.value = "root_value";
   root.children_.resize(7);
   root.selected_child_ = root.children_.begin();
   return 0;
}
//]
#include <boost/container/detail/config_end.hpp>