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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.
innovative idea
He probably dont even know, cause he just copied this solution:
https://www.codewars.com/kata/reviews/52aaf568fd48ce4e7b00068f/groups/58342174fa17ada46e0003e1
And made its 'look better' (shorter code = more popular here)
what does "\$&" mean?
I dont' know it . please explain
Why not
===?I did something like this and it kept giving me errors... happy to know i was on the right track...
Great idea!