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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! About
#to_i- indeed, had C++ in my mind by the time :)Interesting solution. I had never used
tr(...)oreach_cons(...)before.I think
ch.ord - '0'.ordis unnecessary. You can just doch.to_i.