[RESOLVED] for_each and member function

[Richard.J]

I have searched the forum and googled, but I can't get this code to compile (using VS2010 and gcc4.6.1):

#include <string>
#include <vector>
#include <algorithm>
#include <boost/bind.hpp>

class X
{
public:
    void foo( const std::vector<std::string>& v )
    {
        std::for_each( v.begin(), v.end(), std::bind1st( std::mem_fun(&X::bar), this ) );
    }

private:
    void bar( const std::string& s ) const
    {
    }
};

VS2010 presents an error message like
"member function already defined or declared"
and gcc something like "... function can not be overloaded" (very cryptic error message).

If I change the vector to foo to std::vector<int> and let bar() take an int, it works perfectly fine.
And if I use boost

        std::for_each( v.begin(), v.end(), boost::bind( std::mem_fun(&X::bar), this, _1 ) );

the above code compiles as well.

While it is perfectly fine for me to use boost I would nevertheless like to understand what's happening here. I have spent more than an hour with this.
Could someone explain what is the problem here?

Thanks,
Richard