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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.
Okay, thank you for explanation!
Can you explain why the kata is retired? I did my best in creating my first kata clean, after reading all the docs. What was my mistake?
Oh, this hint is really helpful! I think, it would be reasonable to throw exceptions when negative numbers are used.
Thank you very much! 👍