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J - Dictionary Definition and Overview |
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J : (noun)
1: a unit of electrical energy equal to the work done when a
current of one ampere passes through a resistance of one
ohm for one second [syn: joule, J, watt second]
2: the 10th letter of the Roman alphabet [syn: J]
Based on WordNet 2.0
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J : \J\ (j[=a]).
J is the tenth letter of the English alphabet. It is a later
variant form of the Roman letter I, used to express a
consonantal sound, that is, originally, the sound of English
y in yet. The forms J and I have, until a recent time, been
classed together, and they have been used interchangeably.
Note: In medical prescriptions j is still used in place of i
at the end of a number, as a Roman numeral; as, vj,
xij. J is etymologically most closely related to i, y,
g; as in jot, iota; jest, gesture; join, jugular, yoke.
See I. J is a compound vocal consonant, nearly
equivalent in sound to dzh. It is exactly the same as g
in gem. See Guide to Pronunciation, [sect][sect] 179,
211, 239.
Based on Webster's Revised Unabridged Dictionary
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J :
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 . 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.
ftp://watserv1.waterloo.edu/languages/apl/j)">(ftp://watserv1.waterloo.edu/languages/apl/j).
J-mode GNU Emacs macros available by
ftp://think.com/pub/j/gmacs/j-interaction-mode.el)">(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].
(1992-10-31)
Based on Webster's Revised Unabridged Dictionary (1913)
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