From 1935eff0b1738ae1293cc8a1a8b4e27a88ffb982 Mon Sep 17 00:00:00 2001 From: quidtum Date: Tue, 22 Feb 2022 21:10:45 -0500 Subject: build --- src/Lib.hs | 1 + 1 file changed, 1 insertion(+) (limited to 'src') diff --git a/src/Lib.hs b/src/Lib.hs index 629ed4f..6842144 100644 --- a/src/Lib.hs +++ b/src/Lib.hs @@ -822,6 +822,7 @@ headMay [] = Nothing headMay (x:_) = Just x data HeadException = HeadException deriving (Show) + instance E.Exception HeadException mustHead :: [a] -> IO a -- cgit v1.2.3