Lisp (programming language): Difference between revisions

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McCarthy's original notation used bracketed "[[M-expression]]s" that would be translated into [[S-expression]]s. As an example, the M-expression {{Lisp2|car[cons[A,B]]}} is equivalent to the S-expression {{Lisp2|(car (cons A B))}}. Once Lisp was implemented, programmers rapidly chose to use S-expressions, and M-expressions were abandoned.<ref name="wexelblat-history-programming-languages"/> M-expressions surfaced again with short-lived attempts of [[MLisp]]<ref name="Smith">{{cite book |last=Smith |first=David Canfield |title=MLISP Users Manual |url=http://www.softwarepreservation.org/projects/LISP/stanford/Smith-MLISP-AIM-84.pdf |access-date=2006-10-13}}</ref> by Horace Enea and [[CGOL]] by [[Vaughan Pratt]].

Lisp was first implemented by [[Steve Russell (computer scientist)|Steve Russell]] on an [[IBM 704]] computer using [[punched card]]s.<ref name="4VwQq">{{Cite web |url=http://jmc.stanford.edu/articles/lisp/lisp.pdf |title=History of Lisp: Artificial Intelligence Laboratory |last=McCarthy |first=John |date=12 February 1979}}</ref> Russell was working for McCarthy's at the time and realized (to McCarthy's surprise) that the Lisp ''[[eval]]'' function could be implemented in [[machine code]].

According to McCarthy<ref name="k4CmX">{{cite conference |title=Early LISP history (1956–1959) |last1=Stoyan |first1=Herbert |date=1984-08-06 |page=307 |publisher=[[Association for Computing Machinery]] |book-title= |pages= |___location= |conference=LFP '84: Proceedings of the 1984 ACM Symposium on LISP and functional programming |doi=10.1145/800055.802047|doi-access=free}}</ref>