c++ - Template type is not "seen" by the compiler inside a lambda -

template<typename wcf, typename wdb> void computegenericdropcount(const function<void(wdb *, int)> &func) {     wcf::foreach([&](wcf *wcf) {         wdb *wdb = wdb::find(wcf->sourceid); // <--- error             // error c2653: 'wdb' : not class or namespace name           if(wdb)             func(wdb, wcf->itemcount);     }); } 

it's weird because seems "see" wcf without problems, use it: wcf->itemcount.

is there workaround or reason why happening?

don't know why doesn't work. here workaround.

template<typename wcf, typename wdb> void computegenericdropcount(const function<void(wdb *, int)> &func) {     auto my_find = wdb::find; // allows lambda "capture" correct function.     wcf::foreach([&](wcf *wcf)      {         wdb *wdb = my_find(wcf->sourceid);               if(wdb)             func(wdb, wcf->itemcount);     }); }