It means to try to use your feature(s) to rewrite/modify several of those little programs, and then take at how much frequently you use those new features, what advantages they give you, and so on. An usability experiment.Bye, bearophile
A short question: what ist your imagination of a perfect not-null references? What should they can do, how they should assigned? Only with (valid) lvalues, or even with rvalues? Tell me a bit of your thoughts.
