STL 難い

give up.

// 本当は status は違うクラスの内部クラス

class status {

public:

    void tick() { /* do something */ }

};
hash_map<int, status> node_status;
for_each(

    node_status.begin(),

    node_status.end(),

    compose1(

        mem_fun(&status::tick),

        select2nd<

            hash_map<int, status>::value_type

        >()

    )

);

/usr/include/stlport/stl/_function.h: In member function ‘typename stlp_std::unary_function::result_type stlp_std::unary_compose<_Operation1, _Operation2>::operator()(typename stlp_std::__call_traits::argument_type>::param_type) const [with _Operation1 = stlp_std::mem_fun_t, _Operation2 = stlp_std::select2nd >]’:

/usr/include/stlport/stl/_algo.h|61| instantiated from ‘_Function stlp_std::for_each(_InputIter, _InputIter, _Function) [with _InputIter = stlp_priv::_Ht_iterator, stlp_std::_Nonconst_traits > >, stlp_priv::_NonLocalHashMapTraitsT > >, _Function = stlp_std::unary_compose, stlp_std::select2nd > >]’
topology_view.cpp|80| instantiated from here
/usr/include/stlport/stl/_function.h|226| error: no match for call to ‘(const stlp_std::mem_fun_t) (const hoge::MyTopologyView::status&)’
/usr/include/stlport/stl/_function_adaptors.h|416| note: candidates are: _Ret stlp_std::mem_fun_t<_Ret, _Tp>::operator()(_Tp*) const [with _Ret = void, _Tp = hoge::MyTopologyView::status]
/usr/include/stlport/stl/_function.h|226| error: return-statement with a value, in function returning 'void'