ceph/src/boost/libs/icl/include/boost/icl/concept/set_value.hpp

   1 /*-----------------------------------------------------------------------------+
   2 Copyright (c) 2010-2010: Joachim Faulhaber
   3 +------------------------------------------------------------------------------+
   4    Distributed under the Boost Software License, Version 1.0.
   5       (See accompanying file LICENCE.txt or copy at
   6            http://www.boost.org/LICENSE_1_0.txt)
   7 +-----------------------------------------------------------------------------*/
   8 #ifndef BOOST_ICL_CONCEPT_SET_VALUE_HPP_JOFA_100924
   9 #define BOOST_ICL_CONCEPT_SET_VALUE_HPP_JOFA_100924
  10
  11 #include <boost/icl/type_traits/is_set.hpp>
  12 #include <boost/icl/type_traits/codomain_type_of.hpp>
  13
  14 namespace boost{ namespace icl
  15 {
  16
  17 //==============================================================================
  18 //= AlgoUnifiers<Set>
  19 //==============================================================================
  20 template<class Type, class Iterator>
  21 inline typename enable_if<is_set<Type>, const typename Type::key_type>::type&
  22 key_value(Iterator it_)
  23 {
  24     return *it_;
  25 }
  26
  27 template<class Type>
  28 inline typename enable_if<is_set<Type>, typename Type::value_type>::type
  29 make_value(const typename Type::key_type& key_val,
  30            const typename codomain_type_of<Type>::type& )
  31 {
  32     return typename Type::value_type(key_val);
  33 }
  34
  35
  36 }} // namespace boost icl
  37
  38 #endif
  39
  40