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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.
could have been much simpler, see fresh prince example.
if (condition) return true; else return false;
can always be rewritten as
return (condition);
...and usually doesn't even require the parentheses around the condition.