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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.
I like your solution just that little bit better. Having the chain at the start just makes it more readable.
I would really love any feedback you would be willing to give. I tried to do this as much OOP and flexible as possible, but it is definitely not very dense. Should I have kept it more compact?
XD
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Have you checked for duplicates?