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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.
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The Haskell solutions grouping is kind of poor.
Two solutions like (f (g x)) and (f $ g x) come up as different solutions, causing most of the first page to just be the same solution with alternating sets of $'s and ( )'s everywhere.
The other thing I've noticed a lot of is that some users (inc. myself) put a linebreak after
module ... wherebefore they start the import list, whereas others do not. These are counting as two different solutions ...Perhaps desugaring (attempting to inline $) the Haskell and removing all whitespace would be a good way to test equivalence.
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