From: jim <jim@web>
Date: Thu, 30 Apr 2015 16:19:15 +0000 (-0400)
Subject: tweak wrapper for delimcc
X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=fef31f342d31c1fd1033f6aa023d2ed7b3fc47b0;ds=sidebyside

tweak wrapper for delimcc
---

diff --git a/topics/week13_native_continuation_operators.mdwn b/topics/week13_native_continuation_operators.mdwn
index 8d64d2e6..179b7801 100644
--- a/topics/week13_native_continuation_operators.mdwn
+++ b/topics/week13_native_continuation_operators.mdwn
@@ -105,7 +105,9 @@ However, OCaml doesn't have any continuation operators in its standard deploymen
     # #load "delimcc.cma";;
     # let reset_label = ref None;;
     # let reset body = let p = Delimcc.new_prompt () in
-      reset_label := Some p; let res = Delimcc.push_prompt p body in reset_label := None; res;;
+      let oldp = !reset_label in
+      reset_label := Some p; let res = Delimcc.push_prompt p body in
+      reset_label := oldp; res;;
     # let shift fun_k = match !reset_label with
       | None -> failwith "shift must be inside reset"
       | Some p -> Delimcc.shift p fun_k;;