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records: Slight simplification. 

* guix/records.scm (make-syntactic-constructor): Simplify 'find' expression.
master
Ludovic Courtès 2017-04-16 17:25:11 +02:00
parent f11ae44fa1
commit 94df39cc08
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1 changed files with 4 additions and 5 deletions
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guix/records.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -134,10 +134,9 @@ fields, and DELAYED is the list of identifiers of delayed fields."
((_ (field value) (... ...))
(let ((fields (map syntax->datum #'(field (... ...)))))
(define (field-value f)
(or (and=> (find (lambda (x)
(eq? f (car (syntax->datum x))))
#'((field value) (... ...)))
car)
(or (find (lambda (x)
(eq? f (syntax->datum x)))
#'(field (... ...)))
(wrap-field-value f (field-default-value f))))
(let ((fields (append fields (map car default-values))))