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.
Not the most readable solution, but it looks professional:)
This comment is hidden because it contains spoiler information about the solution
Becuase there is no 'length' propertie for Sets
I've never thought of using reduce to return a more complex data type than just a single value.
Pretty neat and clever solution.