| Icon A descendant of with -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 features but no or s. It has a primitive 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 is supported by a reversible . Icon also has s, which can be explicitly resumed at any time. Version 8.8 by Ralph Griswold includes an , a compiler (for some s) and a library (v8.8). Icon has been ported to , , , , , , , , , , . See also . {(ftp://cs.arizona.edu/icon/)}, {MS-DOS FTP (ftp://bellcore.com norman/iconexe.zip)}. newsgroup: {news: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) |
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