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.
getting
ReferenceError: objectEqual is not defined
at /home/codewarrior/index.js:17:29
at /home/codewarrior/index.js:19:5
at Object.handleError
ALright guys, I know I'm being slow here but why does the solution get rid of duplicates? Is it the pollLast removing the last element?