For a later session, about smartPointers exercice

[chavid]

I find disturbing that the first step (problem1) requires the use of the array flavor of std::make_unique, which has not been covered in the course.

[hageboeck]

+1 My students were also surprised. What I would suggest is to discuss this in the slides. This is linked to #347, and I volunteer to do those two. 🙂