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2 definitions found
From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
Icon
A descendant of SNOBOL4 with Pascal-like
syntax, produced by Griswold in the 1970's. Icon is a
general-purpose language with special features for string
scanning. It has dynamic types: records, sets, lists,
strings, tables. If has some object oriented features but
no modules or exceptions. It has a primitive Unix
interface.
The central theme of Icon is the generator: when an expression
is evaluated it may be suspended and later resumed, producing
a result sequence of values until it fails. Resumption takes
place implicitly in two contexts: iteration which is
syntactically loop-like ('every-do'), and goal-directed
evaluation in which a conditional expression automatically
attempts to produce at least one result. Expressions that
fail are used in lieu of Booleans. Data backtracking is
supported by a reversible assignment. Icon also has
co-expressions, which can be explicitly resumed at any time.
Version 8.8 by Ralph Griswold includes
an interpreter, a compiler (for some platforms) and a
library (v8.8). Icon has been ported to Amiga, Atari,
CMS, Macintosh, Macintosh/MPW, MS-DOS, MVS, OS/2,
Unix, VMS, Acorn.
See also Ibpag2.
(ftp://cs.arizona.edu/icon/), {MS-DOS FTP
(ftp://bellcore.com norman/iconexe.zip)}.
Usenet newsgroup: comp.lang.icon.
E-mail: , .
Mailing list: icon-group@arizona.edu.
["The Icon Programmming Language", Ralph E. Griswold and Madge
T. Griswold, Prentice Hall, seond edition, 1990].
["The Implementation of the Icon Programmming Language", Ralph
E. Griswold and Madge T. Griswold, Princeton University Press
1986].
(1992-08-21)
From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
icon
A small picture intended to represent something (a
file, directory, or action) in a graphical user interface.
When an icon is clicked on, some action is performed such as
opening a directory or aborting a file transfer.
Icons are usually stored as bitmap images. {Microsoft
Windows} uses a special bitmap format with file name extension
".ico" as well as embedding icons in executable (".exe") and
Dynamically Linked Library (DLL) files.
The term originates from Alan Kay's theory for designing
interfaces which was primarily based on the work of Jerome
Bruner. Bruner's second developmental stage, iconic, uses a
system of representation that depends on visual or other
sensory organization and upon the use of summarising images.
{IEEE publication
(http://ieee.org/organizations/history_center/cht_papers/Barnes.pdf)}.
[What MS tool can create .ico files?]
(2003-08-01)