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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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the spread operator didnt always exist.
I think I did this efore the spread operator existed. So ...args wasn't valid.
I've learned it from a combination of things, but I usually use the mozilla developer documents for reference. Hope this helps! https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace.
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