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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.
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In general a good practice is to avoid unnecessary code, but sometimes it's better to write more for readability.
Isn't also a best practice not to have multiple return statements when not necessary?
It's not a good practice to put else statement after return.