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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 take this from this kata solutions (https://www.codewars.com/kata/reviews/628f8a9dbee447000115a41f/groups/628f99f841bdea0001bee5e4), you need know this, my solution to slow :3
Very nice, i'll take this but with my style. Very elegant)