set-car! -- r7rs Definition

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Kind

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mutator!;

Extended by

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• set-car! (from vonuvoli);

Procedure signature

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Procedure variants:

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

Exports

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• scheme:base -- (scheme base);

Exports recursive

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• scheme -- (scheme);

Description

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(set-car! pair obj)

Stores obj in the car field of pair.

(define (f) (list 'not-a-constant-list))
(define (g) '(constant-list))
(set-car! (f) 3)             ===>  #unspecified
(set-car! (g) 3)             ===>  #error

---

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

Referenced-types

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• pair;
• any;
• undefined;