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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.
isn't it easy to read and understand to write "function". I know its easy to write arrow function, but for me the classic way is much more simpler to understand and read.
it can get more compact if you turn it into an arrow function