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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.
just learn and practice regexs. it's worth it!
Math always wins!!!
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this looks elegant, but spreading an array into an argument list may be dangerous in case of big arrays
This kata is a perfect example of why a programmer needs math :)