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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.
Nice. I wrote the same, but without explicit parameters names. Your solution is more readable than mine ;)
I really like the use of sub and whole here.
ah mine the same but less readable then yours