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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.
Good answer, you should check out the coffeescript existence operator,
?. This should help.I'm really not fond of the usage of those characters. angleA, angleB, and angleC are much better names in my opinion