scheme:cxr -- r7rs Export

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Descriptor

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(scheme cxr)

Definitions

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• caaar;
• caadr;
• cadar;
• caddr;
• cdaar;
• cdadr;
• cddar;
• cdddr;
• caaaar;
• caaadr;
• caadar;
• caaddr;
• cadaar;
• cadadr;
• caddar;
• cadddr;
• cdaaar;
• cdaadr;
• cdadar;
• cdaddr;
• cddaar;
• cddadr;
• cdddar;
• cddddr;

Description

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CxR Library

The (scheme cxr) library exports twenty-four procedures which are the compositions of from three to four car and cdr operations. For example caddar could be defined by

(define caddar
  (lambda (x) (car (cdr (cdr (car x))))))

The procedures car and cdr themselves and the four two-level compositions are included in the base library. See section on pairs and lists.

caaaar                  caaadr
caaar                   caadar
caaddr                  caadr
cadaar                  cadadr
cadar                   caddar
cadddr                  caddr
cdaaar                  cdaadr
cdaar                   cdadar
cdaddr                  cdadr
cddaar                  cddadr
cddar                   cdddar
cddddr                  cdddr

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The text herein was sourced and adapted as described in the "R7RS attribution of various text snippets" appendix.

Super-exports

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• scheme;

Categories

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• libraries;