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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.
Why?
(side-note to your answer: are there cases where it cannot be avoided?)
Thanks, but I think an auto type cast should be relevant when it can be avoided.
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Change
digital_root(n)
toreturn digital_root(n)
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Sometimes i just feel kinda dumb when i see the solution XD