View Source Credo.Check.Refactor.NegatedConditionsInUnless (Credo v1.7.5)


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Unless blocks should avoid having a negated condition.

The code in this example ...

unless !allowed? do

... should be refactored to look like this:

if allowed? do

The reason for this is not a technical but a human one. It is pretty difficult to wrap your head around a block of code that is executed if a negated condition is NOT met. See what I mean?

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