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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.
Thank you! I could do it recursively but usualy the iterative solution is harder to implement, so I chose iterative this time. :-) Thank you again, this is great motivation for me.
No, check for spaces before or after the ip in the string. Those are invalid.