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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.
fixed
Looking at it now, I'd say you're right. '==' does indeed return a boolean.
There's no specific reason for explicitly stating true/false here. Just a rookie mistake that I never bothered to correct.