lambda::bind and abstract class - how to? - Boost-users

5 Mar 2010


      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;
}

lambda::bind and abstract class - how to?

Archie14

Robert Jones

Archie14

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