Loading collection data...
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.
implied
The collect call doesn't need a turbofish because the collection type is inferred by the return type
Didn't read description saying to assume input is >= 0