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S-expression
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S-expression

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Also known as S expression, sexp, sexpr, S-expression notation

thumb|Tree (data structure)|Tree data structure representing the S-expression (* 2 (+ 3 4))

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8 sections
Contents
  • Characteristics
  • Datatypes and syntax
  • Use in Lisp
  • Relation to XML
  • Standardization
  • See also
  • References
  • External links

thumb|Tree (data structure)|Tree data structure representing the S-expression (* 2 (+ 3 4))

In computer programming, an S-expression (or symbolic expression, abbreviated as sexpr or sexp) is an expression in a like-named notation for nested list (tree-structured) data. S-expressions were invented for, and popularized by, the programming language Lisp, which uses them for source code as well as data.

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