//  Boost noncopyable.hpp header file  --------------------------------------//

 //  (C) Copyright Beman Dawes 1999-2003. 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/utility for documentation.

 #ifndef BOOST_NONCOPYABLE_HPP_INCLUDED

 #define BOOST_NONCOPYABLE_HPP_INCLUDED

 namespace boost {

 //  Private copy constructor and copy assignment ensure classes derived from

 //  class noncopyable cannot be copied.

 //  Contributed by Dave Abrahams

 namespace noncopyable_  // protection from unintended ADL

 {

   class noncopyable

   {

    protected:

       noncopyable() {}

       ~noncopyable() {}

    private:  // emphasize the following members are private

       noncopyable( const noncopyable& );

       const noncopyable& operator=( const noncopyable& );

   };

 }

 typedef noncopyable_::noncopyable noncopyable;

 } // namespace boost

 #endif  // BOOST_NONCOPYABLE_HPP_INCLUDED