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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! Very helpful explanation.
Someone else has made the same comment already: s is a const char* parameter. If you cast it to a char*, you allow that it is modified. I think this smells, even if strtok does not change s.