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14 lines
453 B
Scheme
14 lines
453 B
Scheme
;; alist.scm -- association list utilities
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;; Copyright (c) 2009 Alex Shinn. All rights reserved.
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;; BSD-style license: http://synthcode.com/license.txt
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(define (alist-cons key value ls) (cons (cons key value) ls))
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(define (alist-copy ls) (map (lambda (x) (cons (car x) (cdr x))) ls))
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(define (alist-delete key ls . o)
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(let ((eq (if (pair? o) (car o) equal?)))
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(remove (lambda (x) (eq (car x) key)) ls)))
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(define alist-delete! alist-delete)
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