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;; -*-theme-d-*-
;; Copyright (C) 2014 Tommi Höynälänmaa
;; Distributed under GNU General Public License version 3,
;; see file doc/GPL-3.
;; Expected results: translation and running OK
(define-proper-program (tests test309)
(import (standard-library core)
(standard-library string-utilities)
(standard-library console-io))
(define-simple-proc my-substring
(((str <string>) (i-start <integer>) (i-end <integer>))
<string>
force-pure)
(let-mutable ((result <string> ""))
(do ((i <integer> i-start (+ i 1))) ((>= i i-end))
(set! result (string-append result (string (string-ref str i)))))
result))
(define main
(lambda (() <none> nonpure)
(let* ((str (my-substring "abc" 1 2)))
(console-display-line str)))))
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