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10th letter of the alphabetalphabet
[Gr. alpha-beta, like Eng. ABC], system of writing, theoretically having a one-for-one relation between character (or letter) and phoneme (see phonetics). Few alphabets have achieved the ideal exactness.
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, a Western European medieval development of I, with which it was formerly quite interchangeable in writing. It is pronounced as a consonant in English and often as a y in other languages, as in the Hebrew hallelujah.




A unit of energy or work; equals the work done by a force of 1 newton which acts over a distance of 1 metre in the direction of the force.


A derivative and redesign of APL with added features and control structures. J is purely functional with lexical scope 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 <hui@yrloc.ipsa.reuter.com>. 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 purely functional language.

Version 4.1 for MS-DOS, Sun, Mac, Archimedes. Source available in C from Iverson Software, +1 (416) 925 6096.

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 ftp://think.com/pub/j/gmacs/j-interaction-mode.el.

["APL\?", Roger K.W. Hui et al, APL90 Conf Proc, Quote Quad 20(4):192-200].


A high-level mathematical programming language developed by Kenneth Iverson, the author of APL. J is the successor to APL and runs on a variety of platforms, including DOS, Windows, OS/2, Unix and the Macintosh. The Windows version can be used as a calculating engine for Visual Basic, in which Visual Basic is used to write the file handling and user interface portions, and J is used to program the math.
References in periodicals archive ?
How the damages bill will be split between J's mother and the trust has yet to be decided.
5, 2016, the Little Rock location began operating under the name Pasta J's Italian Neighborhood Bistro.
J's Designs additionally exhibited at Eclat de Mode Bijorhca in Paris.
Big Daddy J's redefines what malt liquor can be when brewed by a very talented craft brewer and new dad," said Irene Firmat, Full Sail's CEO and Founder.
Amazing supercar t even doesn' have a windscreen J's Factfile: Model: Lamborghini Aventador J two-door roadster Price: pounds 1,750,000 Engine: 6.
According to court documents, J's traumatic delivery left him with a "traumatic brain injury".
J's saving grace is her mother's sister, Guinevere, who has arrived for the funeral.
We were looking for a state-of-the-art database engine to resolve two problems our customers were experiencing," said Bryn Jenkins, chief operating officer of Four J's Development Tools.
We are pleased that Four J's has chosen to provide native support for the ANTs Data Server for its flagship Genero product suite said Boyd Pearce, ANTs chief executive officer.
The question of J's profound educational needs is due to be hammered out by a Special Educational Needs Tribunal later this month, but his lawyers yesterday called for a separate judicial review hearing in order to test the adequacy of the council's care package.
Jeri Barnes' disdain for drab umbrellas has translated into a million-dollar manufacturing business for Tropical J's owners.