Hi there,
I am testing the following sample code on page 264 of the book "Beyond the
C++ Standard Library" and got an error msg: "result_type' : is not a member
of '`global namespace'' from MSVC 2008 Pro compiler. Can anyone point out
what is wrong with it? Thanks.
------------
#include<iostream>
#include<string>
#include<map>
#include<vector>
#include<algorithm>
#include "boost/bind.hpp"
class print_size {
typedef std::map map_type;
public:
typedef void result_type;
result_type operator()(std::ostream& os, const map_type::value_type& x)
const {
os << x.second.size() << '\n';
}
};
int main() {
typedef std::map map_type;
map_type m;
m["Strange?"].push_back(1);
m["Strange?"].push_back(2);
m["Wierd?"].push_back(3);
m["Wierd?"].push_back(4);
m["Wierd?"].push_back(5);
std::for_each(m.begin(), m.end(),
boost::bind(&print_size(), boost::ref(std::cout), _1));
}
------------
