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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 use a hlinter for what goose mentioned, it basically formats my code whenever I save the file :D
Word of advice: you don't need to enclose
toUpper cwith parentheses; function application is "stickier" than any infix operator