Hard disagree. There are times when nobody, really nobody, cares about a given type. See the example of std::chrono::steady_clock::now over at cppreference.com. There you have
const auto start = std::chrono::steady_clock::now();
do_some_work(size);
const auto end = std::chrono::steady_clock::now();
const std::chrono::duration<double> diff = end - start;
std::cout << "diff = " << diff << "; size = " << size << '\n';
Looking up the (current standard's) return type of std::chrono::steady_clock::now() and spelling it out would serve no purpose here.
With 'auto' it is so very verbose. It can be shorter. Let us put "using TP = std::chrono::steady_clock::time_point;" in some header file to be used in many places. Now you can write
TP start = TP::clock::now();
do_some_work(size);
TP end = TP::clock::now();
I prefer to put the `using` in the block where you need the std::chrono code, which keeps it local and tidy. Putting it in a header is declaring a global type and asking for trouble; at least bound it in a namespace or a class.
