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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.
You can muddle the input format even more by requiring accepting
removeFriends(friendsList, 2, 3); // remove Bob and Charlie. It's even possible to pass in a list element to be deleted ( won't work with a literal, but will work with the actual object ).Personally I like strong, static typing, so I'd just hate that even more, but it would fit with the theme.