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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.
I see, thanks.
@Chrono79 - you're half right. Since his solution involves making a set, you have to use
.toLowerCase()or else the set will include extra entries when letters appear in multiple cases. However, because you're taking that step anyway, no need for the ignore case regex flag.It should be one or the other.