polymorphic functors std::for_each

i'm perplexing stl algorithm for_each but proliferating templates via code. std::for_each wants instantiate myfunctor category value, nonetheless can't given the abstract. i've combined functor adapter category passes pointer around following derefernces appropriate.

my question:

does stl boost already have such an adapter class? i don't wish have reinvent wheel!

 struct myfunctor  {
     practical ~myfunctor() {}
     practical vacant operator()(int a) = 0; 
 }

 namespace {
     template<typename functortype, typename operandtype> struct
 functoradapter
     {
         functoradapter(functortype* functor) : mfunctor(functor) {}
         vacant operator()(operandtype& subject)
         {
             (*mfunctor)(subject);
         }

         functortype* mfunctor;
     }; }

 vacant applytoall(myfunctor &f) {
     functorhelper<myfunctor, int> tmp(&f);
     std::for_each(myvector.begin(), myvector.end(), tmp); }

cheers,

dave