<language> (APL) A programming 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.

Dyalog APL/W and Visual APL are recognized .NET languages.

Dyalog APL/W, APLX and APL2000 all offer object-oriented extensions to the language.

ISO 8485 is the 1989 standard defining the language.

Commercial versions: APL SV, VS APL, Sharp APL, Sharp APL/PC, APL*PLUS, APL*PLUS/PC, APL*PLUS/PC II, MCM APL, Honeyapple, DEC APL, APL+Win, APL+Linux, APL+Unix and VisualAPL , Dyalog APL , IBM APL2 , APLX , Sharp APL

Open source version: NARS2000 .

APL wiki .

See also Kamin's interpreters.

APLWEB translates WEB to APL.

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

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