Clean

About Clean

Clean is a general-purpose purely functional programming language. Originally called the Concurrent Clean System or the Clean System, it has been developed by a group of researchers from the Radboud University in Nijmegen since 1987. Although development of the language has slowed, some researchers are still working in the language. In 2018, a spin-off company was founded that uses Clean.

Inception: 1987
Website: http://clean.cs.ru.nl

Overview

Clean is a general-purpose purely functional computer programming language. It was called the Concurrent Clean System, then the Clean System, later just Clean. Clean has been developed by a group of researchers from the Radboud University in Nijmegen since 1987. Features The language Clean first appeared in 1987. Although development of the language has slowed, some researchers are still working in the language. In 2018, a spin-off company was founded that uses Clean. Clean shares many properties and syntax with a younger sibling language, Haskell: referential transparency, list comprehension, guards, garbage collection, higher order functions, currying, and lazy evaluation. However, Clean deals with mutable state and input/output (I/O) through a uniqueness type system, in contrast to Haskell's use of monads. The compiler takes advantage of the uniqueness type system to generate more efficient code, because it knows that at any point during the execution of the program, only one reference can exist to a value with a unique type. Therefore, a unique value can be changed in place. An integrated development environment (IDE) for Microsoft Windows is included in the Clean distribution.

From Wikipedia (CC BY-SA 4.0).

Notable quotes

“(…) you should look to the areas of your countries where people are poverty-stricken and helpless and then do all you can to raise their standard of living, teaching them cleanliness and high morals. To serve the needy truly and from the heart is true service to God.”
— Haidakhan Babaji, The Teachings of Babaji, 20 April 1983.
“I'll purge and leave sack and live cleanly.”
— William Shakespeare, Henry IV, Part I (c. 1597), Act V, scene 4, line 168.
“For cleanness of body was ever esteemed to proceed from a due reverence to God, to society, and to ourselves.”
— Francis Bacon, Advancement of Learning.
“If dirt was trumps, what hands you would hold!”
— Charles Lamb, Lamb's Suppers, Volume II. Last Chapter.
“The doctrines of religion are resolved into carefulness; carefulness into vigorousness; vigorousness into guiltlessness; guiltlessness into abstemiousness; abstemiousness into cleanliness; cleanliness into godliness.”
— Talmud. Division of Mishna, as translated by Dr. A. S. Bettelheim. Religious zeal leads to cleanliness, cleanliness to purity, purity to godliness, godliness to humility to the fear of sin. Rabbi Pinhasben-Jaïr—Commentary on the lines from the Talmud. See also Talmudde Jerusalem, by Schwab, IV. 16. Commentary on the treatise Schabbath. Schul—Sentences of Proverbes du Talmud et du Midrasch. 463.
“Certainly this is a duty, not a sin. "Cleanliness is indeed next to godliness."”
— John Wesley, Sermon XCII, On Dress. Quoted by Rowland Hill as a saying of Whitefield's.

Quotes via Wikiquote (CC BY-SA), each with its original source.

About Clean

About Clean

Overview

Notable quotes

Live room · 1 here

Overview

Notable quotes