Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Hmm, I assume then it has to do with kinds and why dependently typed languages exist for actual proofs, but take anything I write with a grain of salt as I'm also learning haskell and mostly speculate.
This comment is hidden because it contains spoiler information about the solution
You missed one very obvious case. Don't forget that it's a
Maybe a -> Maybe b, nota -> Maybe b;-)It's not an issue, a question ;-)