[chasote]

The author seems to have taken this desire into consideration too but I don't think he has figured out the way he wants to solve it.

I did find this: https://github.com/pim-book/exercises but it doesn't seem to have taken hold quite yet. Maybe if you and others are so inclined, a nice community effort can solve this issue together and maybe that interactive discussion helps mediate some of the other reasons people give for not providing the solutions up front.