Thanx for the reply.
If by dereferencing the pointer you mean
for_each(shapes.begin(), shapes.end(), bind(&shape::draw, *_1, 2));

then I get another error - cannot instantiate abstract class.
Plus I would expect the dereferencing to slice off the derived bits of circle and rectangle.

Regards
Brian Martin

On Wed, Jun 9, 2010 at 2:42 AM, Steven Watanabe <watanabesj@gmail.com> wrote:
AMDG

Brian Martin wrote:
class shape
{
public:
   virtual void draw(const int)=0;
};

<snip>


vector< shared_ptr<shape> > shapes;

// assume I stick stuff into shapes...

for_each(shapes.begin(), shapes.end(), bind(&shape::draw, _1, 2));

The last statement fails under VC++ 2008 with
error C2665: 'boost::lambda::function_adaptor<Func>::apply' : none of the 2
overloads could convert all the argument types
 

Dereferencing the pointer should work with the current trunk.

In Christ,
Steven Watanabe


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