Loading collection data...
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.
so it means in every haskell kata we can still select either versions, right? thanks for explaining :)
oh, okay. but it makes me wonder why we have the GHC 7 option listed though...
can compile using the test button, but when clicked "Attempt", following message showed up: