1 //-----------------------------------------------------------------------------
2 // boost mpl/identity.hpp header file
3 // See http://www.boost.org for updates, documentation, and revision history.
4 //-----------------------------------------------------------------------------
6 // Copyright (c) 2000-02
9 // Permission to use, copy, modify, distribute and sell this software
10 // and its documentation for any purpose is hereby granted without fee,
11 // provided that the above copyright notice appears in all copies and
12 // that both the copyright notice and this permission notice appear in
13 // supporting documentation. No representations are made about the
14 // suitability of this software for any purpose. It is provided "as is"
15 // without express or implied warranty.
17 #ifndef BOOST_MPL_IDENTITY_HPP_INCLUDED
18 #define BOOST_MPL_IDENTITY_HPP_INCLUDED
20 #include "boost/mpl/aux_/void_spec.hpp"
21 #include "boost/mpl/aux_/lambda_support.hpp"
27 typename BOOST_MPL_AUX_VOID_SPEC_PARAM(T)
32 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,identity,(T))
36 typename BOOST_MPL_AUX_VOID_SPEC_PARAM(T)
40 typedef identity<T> type;
41 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,make_identity,(T))
44 BOOST_MPL_AUX_VOID_SPEC(1, identity)
45 BOOST_MPL_AUX_VOID_SPEC(1, make_identity)
50 #endif // BOOST_MPL_IDENTITY_HPP_INCLUDED