;;; Time-stamp: <06/01/12 11:47:12 nhw>
;;; Copyright (C) 2005 by Noel Welsh.

;;; This library is free software; you can redistribute it
;;; and/or modify it under the terms of the GNU Lesser
;;; General Public License as published by the Free Software
;;; Foundation; either version 2.1 of the License, or (at
;;; your option) any later version.

;;; This library is distributed in the hope that it will be
;;; useful, but WITHOUT ANY WARRANTY; without even the
;;; implied warranty of MERCHANTABILITY or FITNESS FOR A
;;; PARTICULAR PURPOSE.  See the GNU Lesser General Public
;;; License for more details.

;;; You should have received a copy of the GNU Lesser
;;; General Public License along with this library; if not,
;;; write to the Free Software Foundation, Inc., 59 Temple
;;; Place, Suite 330, Boston, MA 02111-1307 USA

;;; Author: Noel Welsh <noelwelsh@yahoo.com>
;; Commentary:

(module random mzscheme

  (provide choose/uniform)

  ;; choose/uniform : (vector-of 'a) -> 'a
  (define (choose/uniform choices)
    (let* ((len (vector-length choices))
           (choice (random len)))
      (vector-ref choices choice)))