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.
unpowerful
I don't like this solution because you are mutating the function argument.
powerful
Never knew you could use join without the (). Thanks for teaching me something :)