Taylan Kammer <taylan.kammer@gmail.com> writes:
The most feature-rich record system supported by Guile is probably the
R6RS record system, which is available through the modules:
(rnrs records syntactic (6))
(rnrs records procedural (6))
(rnrs records inspection (6))
Here's a super brief example usage of R6RS records, demonstrating that
field accessors are defined implicitly, but constructors still use an
unnamed sequence of arguments to assign fields:
(import (rnrs records syntactic (6))) ; must use 'import' for R6RS
(define-record-type (cat make-cat cat?) (fields name age color))
(define garfield (make-cat "Garfield" 42 'orange))
(cat-color garfield) ;=> orange
I did not know about that shorthand — thank you!
I always did this:
(import (srfi srfi-9)) ; define-record-type
(define-record-type <cat>
(make-cat name age color)
cat?
(name cat-name) (age cat-age) (color cat-color))
Compared to that the syntactic form you showed is much nicer.