Strange “no matching function for call to …” error on MacOS

Error appear when using BOOST::fusion::map<....>

Error message:

In file included from axOrm/ormObject/ormObject.test.cpp:5:
axOrm/ormObject/testObjects/objContactAndAddress.h: In member function 'void Atomix::Orm::Tests::CBaseOrmContact::SetName(XString)':
axOrm/ormObject/testObjects/objContactAndAddress.h:92: error: no matching function for call to 'Atomix::Orm::Tests::CBaseOrmContact::GetPropertyHolder()'

Invalid source code

template <class TNameParam> typename fus::result_of::at_key< TmapAssociations,TNameParam>::type & GetAssociationHolder()
{ return fus::at_key<TNameParam>(m_mapAssociations); }

for fix simply change result_of::at_key to result_of::value_at_key

template <class TNameParam> typename fus::result_of::value_at_key<TmapAssociations,TNameParam>::type & GetAssociationHolder()

After fixing this error, you can achieved problem with const modifier. Correct syntax for const definition is:

template typename fus::result_of::value_at_key::type const & GetPropertyHolder() const
{ return fus::at_key(m_mapProperties); }