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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.
In JS, array assignments are 'shallow' copies. cellCopy = cells assigns a pointer to the address of cells to copyCells. When copyCells is changed, cells is as well.
are you using System.Linq; (Line 1)?
What would hero(0,0) return?