blob: ff8e695bc708305dbacaefb9c1cce8c735bc8221 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
;;; utils.ss -- generic utilities
;; Copyright (C) 2009 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 scheme
(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.ss ends here
|
