car -- r7rs Definition

§

Kind

§

accessor;

Implemented by

§

• car (from vonuvoli);

Procedure signature

§

Procedure variants:

• ((pair) -> (any))
  • input: a value of type pair;
  • output: a value of type any;

Exports

§

• scheme:base -- (scheme base);

Exports recursive

§

• scheme -- (scheme);

Description

§

(car pair)

Returns the contents of the car field of pair. Note that it is an error to take the car of the empty list.

(car '(a b c))          ===>  a
(car '((a) b c d))      ===>  (a)
(car '(1 . 2))          ===>  1
(car '())               ===>  #error

---

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

Referenced-types

§

• pair;
• any;