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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.
Is it possible to have better error messages? I'm doing this in clojure. The tests pass when I run them, but a test fails when I submit. I've run the code locally with a varied number of inputs and I'm not getting any problems. Would be helpful if the error message was a bit more informative.