C++ is it possible to bind multiple methods together?

Question

I would like to call a method after another method using std::function. Suppose i have something like this

class foo
{

   std::function<void(int)> fptr;

   void bar(int){
   }
   void rock(){
   }
public:

   foo() {
       fptr = bind(&foo::bar,this,std::place_holder::_1); //<------Statement  1
   }
}

Now because of statement 1 if i call fptr(12) the method bar is called. My question is can i specify or manipulate statement 1 so that after bar is called it calles rock. I know i could simply have bar calle rock but thats not what i am looking for. Can bind help me accomplish this ?

Where is the `std::string` to pass to `rock` supposed to come from? — aschepler, Jul 22 '16 at 23:06
make it simple - suppose there is no string. I am exploring my options — James Franco, Jul 22 '16 at 23:07
Yes that would definitely be an option - could you put that as an answer — James Franco, Jul 22 '16 at 23:10

score 1 · Accepted Answer · answered Jul 22 '16 at 23:11

1

std::bind won't really help here, but a lambda will.

fptr = [this](int n) { bar(n); rock(); };

answered Jul 22 '16 at 23:11

aschepler

70,891
9
107
161

C++ is it possible to bind multiple methods together?

1 Answers1