Alef appeared in the first and second editions of Plan 9, but was abandoned during development of the third edition.[1][2]Rob Pike later explained Alef's demise by pointing to its lack of automatic memory management, despite Pike's and other people's urging Winterbottom to add garbage collection to the language;[3] also, in a February 2000 slideshow, Pike noted: "…although Alef was a fruitful language, it proved too difficult to maintain a variant language across multiple architectures, so we took what we learned from it and built the thread library for C."[4]
Alef was superseded by two programming environments. The Limbo programming language can be considered a direct successor of Alef and is the most commonly used language in the Inferno operating system. The Alef concurrency model was replicated in the third edition of Plan 9 in the form of the libthreadlibrary, which makes some of Alef's functionality available to C programs and allowed existing Alef programs (such as Acme) to be translated.[5]
Exampleedit
This example was taken from the Alef reference manual.[1] The piece illustrates the use of tuple data type.
alef, programming, language, alef, discontinued, concurrent, programming, language, designed, part, plan, operating, system, phil, winterbottom, bell, labs, implemented, channel, based, concurrency, model, newsqueak, compiled, like, language, alefparadigmcompi. Alef is a discontinued concurrent programming language designed as part of the Plan 9 operating system by Phil Winterbottom of Bell Labs It implemented the channel based concurrency model of Newsqueak in a compiled C like language AlefParadigmcompiled concurrent structuredDesigned byPhil WinterbottomFirst appeared1992 32 years ago 1992 Typing disciplineStatic strongOSPlan 9 from Bell LabsInfluenced byC NewsqueakInfluencedLimbo Rust Go Contents 1 History 2 Example 3 See also 4 ReferencesHistory editAlef appeared in the first and second editions of Plan 9 but was abandoned during development of the third edition 1 2 Rob Pike later explained Alef s demise by pointing to its lack of automatic memory management despite Pike s and other people s urging Winterbottom to add garbage collection to the language 3 also in a February 2000 slideshow Pike noted although Alef was a fruitful language it proved too difficult to maintain a variant language across multiple architectures so we took what we learned from it and built the thread library for C 4 Alef was superseded by two programming environments The Limbo programming language can be considered a direct successor of Alef and is the most commonly used language in the Inferno operating system The Alef concurrency model was replicated in the third edition of Plan 9 in the form of the libthread library which makes some of Alef s functionality available to C programs and allowed existing Alef programs such as Acme to be translated 5 Example editThis example was taken from the Alef reference manual 1 The piece illustrates the use of tuple data type int byte byte func return 10 hello c void main int a byte str byte c a str c func See also editCommunicating sequential processes Plan 9 from Bell Labs Go programming language References edit a b Winterbottom Phil 1995 Alef Language Reference Manual Plan 9 Programmer s Manual Volume Two Murray Hill AT amp T Preface to the Third 2000 Edition Plan 9 Manual Murray Hill Bell Labs June 2000 Archived from the original on 2015 02 05 Retrieved 2012 10 29 Pike Rob 2010 Origins of Go concurrency style OSCON Emerging Languages Camp Archived from the original on 2021 12 13 Pike Rob Rio Design of a Concurrent Window System PDF Retrieved 8 March 2013 thread 2 Plan 9 Manual Retrieved 2012 10 29 Flandrena Bob 1995 Alef Users Guide Plan 9 Programmer s Manual Volume Two Murray Hill Bell Labs Phil Winterbottom 1992 10 20 Plan9 VM Newsgroup comp os research Usenet 1c1denINN441 darkstar UCSC EDU nbsp This programming language related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Alef programming language amp oldid 1220129299, wikipedia, wiki, book, books, library,
