Why was the decision made to name it `reduce` instead of `fold` in JavaScript?

After conducting a thorough search on the subject, I found myself unsure of what keyword to use, prompting me to pose this question.

I am curious as to why the name reduce was selected for JavaScript when other more traditional and meaningful names like fold or accumulate are available (in my personal opinion).

In discussions with an individual close to me who is well-versed in JavaScript and has experience with functional languages such as Scheme, Racket, and Clojure, it was suggested that Python may have influenced this decision.

If you possess any additional information about the background of this naming choice that I may not be aware of, or if you know someone who does, I would greatly appreciate any insights you could provide.

Answer №1

When exploring the concept of folding in programming languages, it becomes evident that common names for this operation include fold, reduce, and inject. Despite not being uncommon, reduce stands out as a widely adopted name. Notably, Perl (a language JavaScript borrowed from) uses reduce, likely inspired by Lisp (from which many features are derived). The roots of reduce can be traced back to REDUCE in Common Lisp (originating in the 1980s and standardized in 1994).

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