6.19.1 Extensions to record type definitions

Syntax: define-record-type ?name-spec ?record-clause …

Auxiliary Syntax: fields ?field-spec …

Auxiliary Syntax: method

Auxiliary Syntax: virtual-method

Auxiliary Syntax: super-protocol ?expr

Auxiliary Syntax: destructor-protocol ?expr

Auxiliary Syntax: constructor-signature ?signature

Auxiliary Syntax: type-predicate ?expr

Auxiliary Syntax: custom-printer ?expr

Auxiliary Syntax: equality-predicate ?expr

Auxiliary Syntax: comparison-procedure ?expr

Auxiliary Syntax: hash-function ?expr

Auxiliary Syntax: define-type-descriptors

Auxiliary Syntax: strip-angular-parentheses

Auxiliary Syntax: mixins ?mixin-name …

Auxiliary Syntax: implements ?interface-name …

Defined by R6RS. Define a new R6RS record type; define-record-type. This syntax supports some Vicare extensions.

When the selected language is non–strict R6RS: multiple fields clauses are accepted and the field specifications concatenated in the order in which they are given. Example:

(define-record-type alpha
  (fields a)
  (fields b)
  (fields c))

(define O
  (make-alpha 1 2 3))

(alpha-a O)     ⇒ 1
(alpha-b O)     ⇒ 2
(alpha-c O)     ⇒ 3