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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 can't get the tests (or solution) to run fast enough. I wrote an optimizing system that runs simple (+-<>) loops in one step and runs the test suite in 0.1080 seconds on my machine - and it still times out on CodeWars. Would it be possible to have a compilation option? I think the Haskell Control.Lens package doesn't do that well in interpreted mode.
I'm getting the input [0, 1], which is labeled as [1, 1]. My code is not amused.
(It would also explode on [1, 1], but for a different reason.)
People who haven't encountered Van Larhoven lenses will be unable to succeed.