Neil Mitchell wrote:
Hi Maxime,
inits1 = tail . inits tails1 = init . tails
They look useful, and I have used ones like these before. However, the name is slightly misleading. foldr1 and foldl1 don't "not return the empty list", but both crash if given the empty list. These ones do something very similar and very different from the other ...1 functions, so giving them similar names might result in confusion. That said, I can't think of anything better.
Yeah, I agree those names aren't great and could lead to confusion. I have thought about calling them tails' and inits' but I think that would be worse, since the trailing single quote is used to indicate a more strict version most of the time and this has nothing to do with strictness. At least the tails1 and inits1 names carry the same "non-empty list" concept as foldl1 and foldr1, although in a different sense. Anyone has any better suggestion? Cheers, Maxime