< 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 , 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].
(2004-02-13)