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- S-expression abstract "In computing, s-expressions, sexprs or sexps (for "symbolic expression") are a notation for nested list (tree-structured) data, invented for and popularized by the programming language Lisp, which uses them for source code as well as data. In the usual parenthesized syntax of Lisp, an s-expression is classically defined inductively as an atom, or an expression of the form (x . y) where x and y are s-expressions.The second, recursive part of the definition represents an ordered pair so that s-exprs are effectively binary trees.The definition of an atom varies per context; in the original definition by John McCarthy, it was assumed that there existed "an infinite set of distinguishable atomic symbols" represented as "strings of capital Latin letters and digits with single embedded blanks" (i.e., character string and numeric literals). Most modern sexpr notations in addition use an abbreviated notation to represent lists in s-expressions, so that(x y z)stands for(x . (y . (z . NIL)))where NIL is the special end-of-list symbol (written ' in Scheme).In the Lisp family of programming languages, s-expressions are used to represent both source code and data. Other uses of S-expressions are in Lisp-derived languages such as DSSSL, and as mark-up in communications protocols like IMAP and John McCarthy's CBCL. The details of the syntax and supported data types vary in the different languages, but the most common feature among these languages is the use of S-expressions and prefix notation.".
- S-expression thumbnail Corrected_S-expression_tree_2.png?width=300.
- S-expression wikiPageExternalLink curie.
- S-expression wikiPageExternalLink minilisp.
- S-expression wikiPageExternalLink S-Expressions.
- S-expression wikiPageExternalLink sexpr.sourceforge.net.
- S-expression wikiPageExternalLink sexp.html.
- S-expression wikiPageID "54458".
- S-expression wikiPageRevisionID "595823800".
- S-expression hasPhotoCollection S-expression.
- S-expression subject Category:Data_serialization_formats.
- S-expression subject Category:Lisp_programming_language.
- S-expression type Abstraction100002137.
- S-expression type Communication100033020.
- S-expression type DataSerializationFormats.
- S-expression type Format106636806.
- S-expression type Information106634376.
- S-expression type Message106598915.
- S-expression comment "In computing, s-expressions, sexprs or sexps (for "symbolic expression") are a notation for nested list (tree-structured) data, invented for and popularized by the programming language Lisp, which uses them for source code as well as data. In the usual parenthesized syntax of Lisp, an s-expression is classically defined inductively as an atom, or an expression of the form (x .".
- S-expression label "Expresión S".
- S-expression label "S-expression".
- S-expression label "S-expression".
- S-expression label "S-expression".
- S-expression label "S-выражение".
- S-expression label "S-表达式".
- S-expression label "S式".
- S-expression sameAs S-výraz.
- S-expression sameAs Expresión_S.
- S-expression sameAs S-expression.
- S-expression sameAs S-expression.
- S-expression sameAs S式.
- S-expression sameAs S-표현식.
- S-expression sameAs m.0f70c.
- S-expression sameAs Q1113529.
- S-expression sameAs Q1113529.
- S-expression sameAs S-expression.
- S-expression wasDerivedFrom S-expression?oldid=595823800.
- S-expression depiction Corrected_S-expression_tree_2.png.
- S-expression isPrimaryTopicOf S-expression.
