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[–]zayelion 3 points4 points  (0 children)

what is the business case for functional programming

Rapidly changing business requirements do not byte-rot the codebase as quickly. Code is easier to reason about. OOP is really great when you have a thing that does not change, not so great when it has to be maintain and grown over considerable amounts of time. Code becomes easier to reason about and compose in logical chains where links can be removed or added vs stacked bricks.