<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
;; Posn -> Number.<br>
;; A programm for calculating the distance is Manhatten<br>
(check-expect ( manhatten (make-posn 7 3 ) 10))<br>
(check-expect ( manhatten (make-posn 1 1 ) 2))<br><br></blockquote><div>Hi Roelof,</div><div><br></div>As the<br> code is currently written, it looks like it is passing two arguments to manhatten, rather than one. Is that right?<span></span>