Hot answers tagged requirements
Generally, the product owner would create a new story that describe new requirements and you would estimate and prioritize the new story as any other story.
I will say that it's not limited to functional programming, it's more related to the goal of the project. By using predicate logic (higher order logic) you can create prove for the logic used in the requirement. Translating the logic into functional languages is probably easier. It's also possible to then translate the proven functional language ...
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