From: Chris Barker Date: Tue, 7 Dec 2010 18:06:33 +0000 (-0500) Subject: edit X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=6634e47c2d920a24c18277147590c8146b2d1284;hp=41542591768c00d3a395a458739739ad2dcbea59 edit --- diff --git a/assignment9.mdwn b/assignment9.mdwn index bb15aab1..524c9efe 100644 --- a/assignment9.mdwn +++ b/assignment9.mdwn @@ -118,14 +118,14 @@ val make_int_stream : int -> int stream = [fun] val int_stream : int stream = Next (1, [fun]) (* First element: 1 *) # let tail = match int_stream with Next (i, rest) -> rest;; -val tail : unit -> int stream = (* Tail: a thunk *) +val tail : unit -> int stream = (* Tail: a thunk *) (* Force the thunk to compute the second element *) # tail ();; - : int stream = Next (2, [fun]) (* Second element: 2 *) # match tail () with Next (_, rest) -> rest ();; -- : int stream = Next (3, ) (* Third element: 3 *) +- : int stream = Next (3, ) (* Third element: 3 *) You can think of `int_stream` as a functional object that provides