Re: [Boost-users] Help with deduced template parameters

Chris Ross:

Forgive me if the answer ends up being strictly C++, rather than Boost. But, I have a template class that I would rather be able to deduce it's single [current] template parameter rather than having to specify it. I'm wondering if boost::function or boost::functional might make this easier for me to accomplish.

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template <typename List> class detach_all { public: detach_all(const List &e) : list(e) {} template <class T> void operator ()(T*ent) const { if (dynamic_cast(ent)) { std::for_each(list.begin(), list.end(), stop_messaging(dynamic_cast(ent))); } }

struct detach_all { typedef void result_type; template void operator()( T * pt, L * pl ) const { if( Messageable * pm = dynamic_cast<...>( pt ) ) { std::for_each( pl->begin(), pl->end(), stop_messaging( pm ) ); } } }; int main() { List list; mutexed_for_each( boost::bind( detach_all(), _1, &list ) ); } is one alternative.