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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.
holy molly, that's genius!
(don't forget the spoiler flag... ;) )
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meaning you've never seen lambdas or is there something in particular you do not get in this one? (because the lambda part is pretty generic, actually)
This comment is hidden because it contains spoiler information about the solution