Boost::bind and std::copy
bind, boost, c++
Solution
The template arguments to `std::copy` cannot deduced in the context of the bind call. You need to specify them explicitly:
copy< list<int>::iterator, ostream_iterator<int> >
Also when you write:
for_each(a_list.begin().a_list.end(),
I think that you mean:
for_each(a_list.begin(),a_list.end(),
And you're missing `#include <iostream>` for definition of `std::cout`.
Problem
I'm trying to use Boost::bind and std::copy to print out the values in a list of lists. Obviously, I could use loops, and I may end up doing so for clarity, but I'd still like to know what I'm doing wrong here. Here is the distilled version of my code: ``` #include <boost/bind.hpp> #include <iterator> #include <algorithm> #include <list> #include <iostream> using namespace std; using namespace boost; int main(int argc, char **argv){ list<int> a; a.push_back(1); list< list<int> > a_list; a_list.push_back(a); ostream_iterator<int> int_output(cout,"\n"); for_each(a_list.begin(),a_list.end(), bind(copy, bind<list<int>::iterator>(&list<int>::begin,_1), bind<list<int>::iterator>(&list<int>::end,_1), ref(int_output) ) //compiler error at this line ); return 0; ``` } The compiler error starts off ``` error: no matching function call to bind(<unresolved overloaded function type> ..... ``` I think this means that bind can't figure out what the return type for the outermost bind should be. I don't blame it, because I can't either. Any ideas?