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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.
Thanks for your feedback, I myself am still not overly happy with this construct.
Normally, I got used to defining small "speaking" functions with guards and pattern matching in function heads :)
As I gave up on PHP in favor of Elixir for some years now, but was "raised" by my former co-workers for like 10 years with a "don't ever use ternaries (for they can make code even more obscure)" policy, I think, the best way (regarding readability) would be, to use a small additional function for this, if one wants to avoid ternary operators.