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.
Yeah. I thought the same and returned false and couldn't get thru Test5. Once I returned a.Length == 0 true it went thru.
Thank you for that
"If a or b are empty then the result is self-evident."
I thought this meant it should be false but after printing the arguments, I failed a test because the lists were empty and it expected true.