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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.
You are right😂
This one is at least 7 years old.
You're correct, it's best to use
letin nearly all cases, unless you know what you're doing. I suspect that many of these solutions are old, posted either beforeletwas introduced, or prior to its widespread usage.