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by hansvm
2179 days ago
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Returning 0 for average([]) is useful. Returning a slope of 0 for a vertical linear regression is suspect. Any choice of behavior for x/0 will be wrong in some context, and the question is really about how much help you want from the computer (both from the type system in trying to prevent/model division by 0 and at runtime via errors, via choosing a value for the division, etc). |
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