Page "Functional programming" Paragraph 2

Functional programming languages, especially purely functional ones such as the pioneering Hope, have largely been emphasized in academia rather than in commercial software development.

However, prominent functional programming languages such as Common Lisp, Scheme, ISLISP, Clojure, Racket, Erlang, OCaml, Haskell, Scala and F # have been used in industrial and commercial applications by a wide variety of organizations.

Functional programming is also supported in some domain-specific programming languages like R ( statistics ), Mathematica ( symbolic math ), J, K and Q from Kx Systems ( financial analysis ), XQuery / XSLT ( XML ) and Opal.

Widespread domain-specific declarative languages like SQL and Lex / Yacc use some elements of functional programming, especially in eschewing mutable values.