A Programming Language




<language> (APL) A language designed originally by Ken Iverson at Harvard University in 1957-1960 as a notation for the concise expression of mathematical algorithms.

It went unnamed (or just called Iverson's Language) and unimplemented for many years.

Finally a subset, APL\360, was implemented in 1964.

APL is an interactive array-oriented language and programming environment with many innovative features.

It was originally written using a non-standard character set.

It is dynamically typed with dynamic scope.

APL introduced several functional forms but is not purely functional.

Dyadic Systems {APL/W} is one of the languages that will be available under Microsoft's .NET initative.

ISO 8485 is the 1989 standard defining the language.

Versions: APL\360, APL SV, Dyalog APL, VS APL, Sharp APL, Sharp APL/PC, APL*PLUS, APL*PLUS/PC, APL*PLUS/PC II, MCM APL, Honeyapple, DEC APL, Cognos APL2000 (http://www.apl2000.com/), IBM APL2.

See also Kamin's interpreters.

APLWEB translates WEB to APL.

Dijkstra said that APL was a language designed to perfection - in the wrong direction.

["A Programming Language", Kenneth E. Iverson, Wiley, 1962].

["APL: An Interactive Approach", 1976].



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