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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.
Test case doesn't run for haskell.
First I thought it's my code. When I replaced the code block to
isSquare n = True
The test case still times out on me.