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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.
It works but there are some built in methods that allow you to shorten it up. Remember DRY (Don't Repeat Yourself). Try looking at higher-order functions.