On Fri, Mar 5, 2010 at 1:33 PM, Archie14 wrote:

Here is the sample that fails to compile. Complain is about foo being abstract in IA. Any advise of how to make it work will be greatly appreciated.

#include #include #include

class IA { public: virtual int foo() const = 0; };

class B : public IA { public: B (int a) : _a(a) {}; int foo() const {return _a;} private: int _a; };

int _tmain(int argc, _TCHAR* argv[]) { boost::ptr_vector<IA> lst; lst.push_back(new B(1)); lst.push_back(new B(2));

boost::ptr_vector<IA>::iterator it = std::find_if (lst.begin(), lst.end(), boost::lambda::bind(&IA::foo, boost::lambda::_1) == 1); return 0; }

Replacing boost::lambda::_1 with &boost::lambda::_1 makes my compiler (gcc 4.1.1) stop complaining. Is that what you need? - Rob.