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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.
that's also one way of doing indeed :) You should move to Perl golf problems to have even more fun ^_^
It is just a fun for me, I solved almost every katas with one-liner solutions. Of course, you are right, it is not recommended in production :)
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