翻訳と辞書
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・ icbm address
・ ice
・ icebreaker
・ ices
・ icetran
・ ici
・ icl
・ icmp
・ icmp router discovery protocol
・ icomp
icon
・ icon-based parser generation system 2
・ iconicode
・ iconix software engineering, inc.
・ icq
・ icsi
・ ict
・ icw
・ icws
・ id


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icon : 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


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