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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.
if you want to include error checking, you should as well check if indeed an integer is passed and not another string like "ten" and so on.
great minds think alike