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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.
Best katta ever, it show the power of Haskell type system, at the beginning I did not understand the mining of the data structure but I success to implement function just by reasoning about they type signature and how I could possibly produce the result. Then I understood the data structure and I write function by intition and the type system prove me my intuition was right.
I wish it will be fixed soon