Editing Clean (programming language) (section)

{{Short description|Functional programming language}}
{{Use dmy dates|date=March 2023}}
{{Infobox programming language
| name = Clean
| logo = Clean 3.0 (programming language) logo.svg
| paradigm = [[Functional programming|functional]]
| designer = Software Technology Research Group of [[Radboud University Nijmegen]]
| released = {{Start date and age|1987}}
| latest release version = 3.1
| latest release date = {{Start date and age|2022|01|05|df=yes}}
| typing = [[Strong and weak typing|strong]], [[Static typing|static]], [[Dynamic typing|dynamic]]
| operating system = [[Cross-platform]]
| license = [[Simplified BSD License|Simplified BSD]]<ref>{{cite web |title=Download Clean |url=https://clean.cs.ru.nl/Download_Clean#Clean_3.0_License |website=Clean |access-date=23 July 2019}}</ref>
| influenced by = [https://foldoc.org/Lean Lean], [[Miranda (programming language)|Miranda]], [[Haskell]]
| influenced = [[Haskell]], [[Idris (programming language)|Idris]]<ref>{{cite web|title=Idris - Uniqueness Types|url=http://docs.idris-lang.org/en/latest/reference/uniqueness-types.html|access-date=2018-11-20}}</ref>
| file_ext = .icl, .dcl, .abc
| website = {{URL|clean.cs.ru.nl}}
}}

'''Clean''' is a [[general-purpose programming language|general-purpose]] [[Purely functional programming|purely functional]] [[programming language]]. Originally called the '''Concurrent Clean System'''<ref>{{cite web |url=https://ftp.cs.ru.nl/Clean/old/Clean07/Sun4/README |title=Clean 0.7: Readme |archive-url=https://web.archive.org/web/20190524121044/https://ftp.cs.ru.nl/Clean/old/Clean07/Sun4/README |archive-date=2019-05-24}}</ref> or the '''Clean System''',<ref>{{cite web |url=https://ftp.cs.ru.nl/Clean/old/Clean10/README |title=Clean 1.0: Readme |archive-url=https://web.archive.org/web/20190505113256/https://ftp.cs.ru.nl/Clean/old/Clean10/README |archive-date=2019-05-05}}</ref><ref>{{cite web |url=https://ftp.cs.ru.nl/Clean/Clean13/README |title=Clean 1.3: Readme |archive-url=https://web.archive.org/web/20190427194714/https://ftp.cs.ru.nl/Clean/Clean13/README |archive-date=2019-04-27}}</ref> it has been developed by a group of researchers from the [[Radboud University]] in Nijmegen since 1987.<ref>{{cite web |url=https://www.mbsd.cs.ru.nl/Software |title=Radboud University Nijmegen: Department of Software Science: Software}}</ref><ref>{{cite web |url=http://wiki.clean.cs.ru.nl/FAQ |access-date=2021-11-26 |title=FAQ |website=Clean}}</ref> Although development of the language has slowed, some researchers are still working in the language.<ref>{{cite web |url=https://clean.cs.ru.nl/Publications |access-date=2021-11-26 |title=Publications |website=Clean}}</ref> In 2018, a spin-off company was founded that uses Clean.<ref>{{cite web |url=https://www.top-software.nl/ |title=Home |website=TOP Software Technology |access-date=26 November 2021}}</ref>