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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.
Wow I thought my solution was long.
It's pretty clearly stated in the instructions - I did the same thing at first but read them again. It makes it more complex (not more difficutlt) that way - and therefore more interesting :)
haha, this is amusing, ~10 lines of code becomes 13 characters of code