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.
In Haskell, the solution doesn't seem to match the description. There is no requirement to return "Not a string".
Thank you. I just saw this yesterday, and remembered when I coded, but forgot when I got here.
(I thought I was wrong, but I was mistaken.)
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