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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.
While you are right, the "stack problem" can be dealt by adding an accumulator:
GetSumHelper(a, b, acc)For more info: http://stackoverflow.com/questions/33923/what-is-tail-recursion#37010
a test case is using expectError and I'm throwing an error and it shows on the output that I have thrown an error but the test case is still not regarded as a success. Am I doing something wrong? Shouldn't I throw an error?