Function quick_pop

cpp/src/connection_driver_test.cpp:206–211

};

template <class S> typename S::value_type quick_pop(S& s) {
    ASSERT(!s.empty());
    typename S::value_type x = s.front();
    s.pop_front();
    return x;
}

struct namer : public io::link_namer {
    char name;