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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.
You can do a hack fix and just do a guard that returns Just 0 if the item is negative
It's actually the same issue reported by @Demki
Broken test cases for Haskell :( what a shame
how is this 4 kyu?????? must not be made for haskell...
too ez
Great kata for recursion
Good kata, took me longer than it should have lol