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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.
Does it need the enumerate command? I think my solutuon was similiar without it, is there any performance bennefit either direction?
I think it is best practice because it produced a concise and understandable solution within the constraints outlined by the problem. The problem never required specific exceptions to be caught.