How to Use F.add to Verify Data in Test Code

The add method is very addict, isn't it? It takes any number of arguments in. Then your function has to match that, but it also has the T at the beginning. The user becomes responsible for verifying maybe sometimes in test code that the input does actually make sense. We're doing 90% of this at runtime anyway. I'm going to give you some live feedback if that's okay. A new segment of our show, Johnny's live feedback.

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