WebMany people find Lisp s-expressions hard to read as a programming notation. I've developed Lisp programs for decades, and though I can read s-expressions well, I remain dissatisfied with their syntactic limitations. Others, including Lisp luminary Paul Graham, feel the same way. (Tim Bray loves Clojure, but not its syntax.) WebMay 12, 2024 · So no regular expression can recognise the written form of an s-expression. To see this consider a very tiny subset of s-expressions: n = () ( n) So n consists of the set { (), ( ()), ( ( ())), ...}, where the number of left parens and right parens in each string are equal.
S-expressions - Home
WebMar 4, 2012 · Sure, Lisp-y languages have all kinds of associative array data structures. For instance, Common Lisp has hash tables. But the "S-expression" representation [1] of Common Lisp hash tables is: #S (HASH-TABLE :TEST FASTHASH-EQL (ORANGES . 2) (APPLES . 6) (PEARS . 5)) But this is hardly a "fat-free" syntax any longer, especially for … WebMcCarthy had planned to develop an automatic Lisp compiler (LISP 2) using M-expressions as the language syntax and S-expressions to describe the compiler's internal processes. Stephen B. Russellread the paper and suggested to him that S-expressions were a more convenient syntax. equality court meaning
S-expression - Wikipedia
WebFeb 5, 2024 · In the usual parenthesized syntax of Lisp, an s-expression is classically defined as a) an atom, or b) an expression of the form (x . y) where x and y are s … WebOct 30, 2024 · В 1960-м Маккарти опубликовал знаменитую работу по Лиспу «Рекурсивные функции символических выражений и их машинное вычисление» [Recursive Functions of Symbolic Expressions and Their Computation by Machine]. WebS-expressions first appeared in the paper that introduced the Lisp programming language, Recursive Functions of Symbolic Expressions and Their Computation by Machine (McCarthy 1960). The expressions in that paper were … equality court in gauteng