From 1bb8a1fb9a13840f96fd395093ae1a8694917ac3 Mon Sep 17 00:00:00 2001
From: Jan Sucan <jan@jansucan.com>
Date: Wed, 27 Sep 2023 15:59:19 +0200
Subject: 9_b_4: Add solution

---
 ch09/ControlledVisit.hs | 1 +
 1 file changed, 1 insertion(+)

(limited to 'ch09/ControlledVisit.hs')

diff --git a/ch09/ControlledVisit.hs b/ch09/ControlledVisit.hs
index 9793cdd..52f4e9a 100644
--- a/ch09/ControlledVisit.hs
+++ b/ch09/ControlledVisit.hs
@@ -4,6 +4,7 @@ module ControlledVisit
     , getInfo
     , getUsefulContents
     , isDirectory
+    , traverse'
     ) where
 
 import Control.Exception
-- 
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