Boost C++ Application Development Cookbook - Second Edition

How to do it

In the first case, we need a human-readable type name without qualifiers. The Boost.TypeIndex library will help us out:

#include <iostream>#include <boost/type_index.hpp>template <class T>void do_something_again(const T& x) {    if (x == 0) {        std::cout << "x == 0. T is " << boost::typeindex::type_id<T>()                  << std::endl;    }    // ...}

In the second case, we need to keep the qualifiers, so we need to call a slightly different function from the same library:

#include <boost/type_index.hpp>void sample2() {    auto&& x = 42;    std::cout << "x is "              << boost::typeindex::type_id_with_cvr<decltype(x)>()              << std::endl;}