J

A derivative and redesign of APL with added features and

control structures. J is purely functional with lexicalscope and more conventional control structures, plus several

new concepts such as function rank and function arrays. J

was designed and developed by Kennneth E. Iverson and Roger

Hui [email protected]. J uses only the ASCII

character set but has a spelling scheme that retains the

advantages of APL's special alphabet. J is a conventional

procedural programming language but can be used as a purelyfunctional language.

Version 4.1 for MS-DOS, Sun, Mac, Archimedes. Source

available in C from Iverson Software, [phone].

Version 6 package from ISI includes an interpreter and

tutorial. Ported to DEC, NeXT, SGI, Sun-3, Sun-4,

Vax, RS/6000, MIPS, Macintosh, Acorn Archimedes,

IBM PC, Atari, 3b1, Amiga.

.

J-mode GNU Emacs macros available by

.

["APL?", Roger K.W. Hui et al, APL90 Conf Proc, Quote Quad

20(4):192-200].

(1992-10-31)