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Q&A

Did functional programming predated Object oriented programming or rather the opposite?

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By "functional" I don't mean "procedural" (i.e. I don't mean to programming which is done solely or primarily with these data structures commonly known as "functions" but are actually procedures), rather, I mean "functional" by basic (mathematical?) programming meaning.

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Kind of depends on how you define these terms. All of them go back to the earliest days of computing, in some form. Private encapsulation of autonomous "abstract data types" was around very early, long before "modern" OOP emerged in the 1980s somewhere. Lundin‭ about 1 month ago

googling "first object oriented" vs. "first functional" programming language, there turn up Simula (1967) and LISP (late 1950's) sktpin‭ about 1 month ago

Yeah, either we stick with the commonly used definitions or interpretations of "object oriented programming" and "functional programming", or we end up with a bunch of different and contradictory answers that despite their contradictions will all be true in some sense because we change the rules of the game as we go along... elgonzo‭ about 1 month ago

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I would argue that functional programming predates functioning computers.

Alonzo Church developed the Lambda Calculus in the 1930s. This may be a fairly austere form of functional programming, but I think it qualifies.

As noted in a comment, Lisp (which was heavily influenced by the lambda calculus) was developed in the 1950's; that's a long time before people started developing the idea of object orientation.

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According to "Composing Software", by Eric Elliot, pages 13 to 17, yes.

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