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Arc is a dialect of the Lisp programming language developed by Paul Graham and Robert Morris. == History== In 2001, Paul Graham announced that he was working on a new dialect of Lisp named "Arc". Over the years since, he has written several essays describing features or goals of the language, and some internal projects at Y Combinator have been written in Arc, most notably the Hacker News web forum and news aggregator program. Arc itself is written in Racket.〔(【引用サイトリンク】title= Arc Programming Language )〕 In the essay ''Being Popular''〔(【引用サイトリンク】title=Being Popular )〕 Graham describes a few of his goals for the language. While many of the goals are very general ("Arc should be hackable," "there should be good libraries"), he did give some specifics. For instance, he believes that it is important for a language to be terse: He also stated that it is better for a language to only implement a small number of "axioms", even when that means the language may not have features that large organizations want, such as object-orientation (OO). In fact, Graham feels that OO is not useful as its methods and patterns are just "good design", and he sees the language features used to implement OO as partially mistaken. At Arc's introduction in 2008, Graham stated one of its benefits was its brevity.〔(【引用サイトリンク】title=Arc Makes Programs Shorter )〕 A controversy among Lisp programmers is whether, and how much, the S-expressions of the language should be complemented by other forms of syntax. Graham feels that additional syntax should be used in situations where pure S-expressions would be overly verbose, saying, "I don't think we should be religiously opposed to introducing syntax into Lisp." Graham also feels that efficiency problems should be solved by giving the programmer a good profiler. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arc (programming language)」の詳細全文を読む スポンサード リンク
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