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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.
not according to the Ruby style guide
That's not clever. Target was to output is as over-complicated as possible. Not as simple as possible.
Isn't better to use oneliner like:
def square a; a*a end
OK, who's been marking this as 'clever'... ?