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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.
Hi. Please say which language you are using when it can be relevant. I assume, after seeing your profile, that you must be using c++. To use
std::setyou must include the corresponding header. See the documentation: https://en.cppreference.com/w/cpp/container/setWhy I can not using a set?