出典:Wikipedia
出典:『Wikipedia』 (2011/06/19 02:29 UTC 版)
S-expressions or sexps (for "symbolic expression") are list-based data structures that represent semi-structured data. An S-expression may be a nested list of smaller S-expressions. S-expressions are probably best known for their use in the Lisp family of programming languages. They are typically represented in text by parenthesized, whitespace-separated sequences of character strings, as in (= 4 (+ 2 2)), which represents the Boolean expression commonly written as 4==(2+2) in C and its related programming languages.