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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 had troubles too and i wonder how you came up with such a lovely solution... well done !
i took a pen and paper and understood the problem, but now i really dont know how to solve it (yet) :)
what is the function of the underscore ?