Linked list using polymorphic lambdas

list.cc

// http://lists.boost.org/Archives/boost/2014/06/214213.php
// http://stackoverflow.com/questions/25338795/is-there-a-name-for-this-tuple-creation-idiom

#include <iostream>
#include <string>
#include <functional>

auto list = [](auto ...xs) {
    return [=](auto access) { return access(xs...); };
};

auto head = [](auto xs) {
    return xs([](auto first, auto ...rest) { return first; });
};

auto tail = [](auto xs) {
    return xs([](auto first, auto ...rest) { return list(rest...); });
};

auto length = [](auto xs) {
    return xs([](auto ...z) { return sizeof...(z); });
};

int main()
{
  auto l = list(1, '2', "3");
  auto three = length(l); 
  std::cout << three;
}