ceph/src/boost/libs/bind/bind_visitor.cpp

   1 #include <boost/config.hpp>
   2
   3 #if defined(BOOST_MSVC)
   4 #pragma warning(disable: 4786)  // identifier truncated in debug info
   5 #pragma warning(disable: 4710)  // function not inlined
   6 #pragma warning(disable: 4711)  // function selected for automatic inline expansion
   7 #pragma warning(disable: 4514)  // unreferenced inline removed
   8 #endif
   9
  10 //
  11 //  bind_visitor.cpp - tests bind.hpp with a visitor
  12 //
  13 //  Copyright (c) 2001 Peter Dimov and Multi Media Ltd.
  14 //
  15 // Distributed under the Boost Software License, Version 1.0. (See
  16 // accompanying file LICENSE_1_0.txt or copy at
  17 // http://www.boost.org/LICENSE_1_0.txt)
  18 //
  19
  20 #include <boost/bind/bind.hpp>
  21 #include <boost/ref.hpp>
  22 #include <iostream>
  23 #include <typeinfo>
  24
  25 using namespace boost::placeholders;
  26
  27 //
  28
  29 struct visitor
  30 {
  31     template<class T> void operator()( boost::reference_wrapper<T> const & r ) const
  32     {
  33         std::cout << "Reference to " << typeid(T).name() << " @ " << &r.get() << " (with value " << r.get() << ")\n";
  34     }
  35
  36     template<class T> void operator()( T const & t ) const
  37     {
  38         std::cout << "Value of type " << typeid(T).name() << " (with value " << t << ")\n";
  39     }
  40 };
  41
  42 int f(int & i, int & j, int)
  43 {
  44     ++i;
  45     --j;
  46     return i + j;
  47 }
  48
  49 int x = 2;
  50 int y = 7;
  51
  52 int main()
  53 {
  54     using namespace boost;
  55
  56     visitor v;
  57     visit_each(v, bind<int>(bind(f, ref(x), _1, 42), ref(y)), 0);
  58 }