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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.
How did you avoid the warning about comparing an int to size_t?
My code kept failing the attempt till I put in the print statement and then it just passed all of a sudden... I think the malloc was failing? I don't know.
I am very impressed with this. I had no idea replace would just return the string if it fails to find the item.