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.
Looks like js worker is not performanced, even my browser can calculate fib(1209268) in 5 sec, but the worker can't do that in 12 sec. upset... But that means there is a room to improve the code!