[Boost-users] [Q] error with shared_ptr, for_each, boost::mem_fn

Subject: [Boost-users] [Q] error with shared_ptr, for_each, boost::mem_fn
From: V S P (toreason_at_[hidden])
Date: 2009-02-24 20:18:12

Hi, 
I cannot resolve why boost::mem_fn does not appear to be able to resolve
to a pointer (or a reference) from a smart pointer to a derived object
(My understanding is
that get_pointer in boost::shared_ptr is specifically available so that
boost::mem_fn can work)

Here is the example of code and line with error (Visual Studion 2008 32
bit)

Thank you in advance for any help
----------------------------------------------

#include <iostream>
#include <boost/shared_ptr.hpp>
#include <boost/mem_fn.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/utility.hpp>
#include <boost/enable_shared_from_this.hpp>

#include <vector>

using namespace boost;
using namespace std;

struct A: public enable_shared_from_this<A>
{
   static void myfunc(const A* in)
   {
   
   }
};
   

struct B: public A,
      public enable_shared_from_this<B>
{
   typedef shared_ptr<B> tBptr;

};

int main (void)
{
   vector<B::tBptr> v;   
   B::tBptr p(new B());
   v.push_back(p);
   p.reset(new B());
   v.push_back(p);   
   //error cannot deduce argument
   for_each (v.begin(),v.end(), boost::mem_fn(&A::myfunc));   
   return 0;
}

-- 
  V S P
  toreason_at_[hidden]
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