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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.
People often use them where they shouldn't, unless it's a callback.
But this is more my preference
It is strange to hate arrow functions... It is just type of function
I hate arrow functions, that's why I wrote it as supposed to!!!