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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.
So the
...is called a spread operator and in this particular case its used to turn an array into just parameters. It will take the array and spread its values out but without the[]part.The min method is not expecting an array.