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authorJose Antonio Ortega Ruiz <jao@gnu.org>2010-05-24 00:03:30 +0200
committerJose Antonio Ortega Ruiz <jao@gnu.org>2010-05-24 00:03:30 +0200
commit2d30daecad657d692a7f3cb66deb496630362600 (patch)
tree6b4f7e2cc66633465715696ec89f018dcb2b2f20 /scheme/racket/geiser/utils.rkt
parent0b491101472741c3728b6ccf80c121d66e90f94e (diff)
downloadgeiser-chez-2d30daecad657d692a7f3cb66deb496630362600.tar.gz
geiser-chez-2d30daecad657d692a7f3cb66deb496630362600.tar.bz2
Racket: PLT implementation renamed to Racket.
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+;;; utils.rkt -- generic utilities
+
+;; Copyright (C) 2009, 2010 Jose Antonio Ortega Ruiz
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the Modified BSD License. You should
+;; have received a copy of the license along with this program. If
+;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
+
+;; Start date: Sun May 03, 2009 03:09
+
+#lang racket
+
+(provide pair->list
+ keyword->symbol
+ symbol->keyword)
+
+(define (pair->list pair)
+ (let loop ((d pair) (s '()))
+ (cond ((null? d) (reverse s))
+ ((symbol? d) (reverse (cons d s)))
+ (else (loop (cdr d) (cons (car d) s))))))
+
+(define keyword->symbol (compose string->symbol keyword->string))
+(define (symbol->keyword sym) (string->keyword (format "~a" sym)))
+
+;;; utils.rkt ends here