I'd say that "pure Functional programming" has become a no.
But "Functional programming approach" has been subsumed into existing programming languages, e.g. records in Java. You get most of the benefit of FP while keeping all of the other good stuf from an imperative language.
But "Functional programming approach" has been subsumed into existing programming languages, e.g. records in Java. You get most of the benefit of FP while keeping all of the other good stuf from an imperative language.