Re: Problems mixing boost::lambda::bind and boost::shared_ptr..

Hi,

Consider the following:

class A
{
public:
   virtual bool foo() = 0;
};

class B : public A
{
public:
   virtual bool foo() { return false; }
};

void fn()
{
   std::list< A * > aList(10);
   std::list< boost::shared_ptr<A> > aSharedList(10);

   // This works fine..
   std::count_if(
     aList.begin(),
     aList.end(),
     boost::lambda::bind(A::foo, boost::lambda::_1)
   );

   // This doesn't compile..
   std::count_if(
     aSharedList.begin(),
     aSharedList.end(),
     boost::lambda::bind(A::foo, boost::lambda::_1)
   );
}

--

Why doesn't the second case compile ? The only difference is that I'm
making the call through a shared_ptr instead of a naked one. If
shared_ptr semantics are (essentially) identical to the naked pointer
ones then this should surely work ? Is there some extra syntax required
in the shared_ptr case or does this simply not work ?

Thanks in advance,

--
t o b e
Rawflow,
London, UK.