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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.
In Ruby "Run Tests"? Must be fixed now, could you please tell me if it works?
If I understand correctly,
You want to see all your previously completed Kata ?
Go to your profile,
There should be a summary of Kata you have completed.
Once you open the kata you can click on "train again" to see your latest solution as well as your previous solutions (there are 3 tabs on the left side, one says solutions)
You can also "star" Kata you really like, for quicker navigation later on.