From 0a4d3c8f12dc5797a919a00b6bcaf759947687cc Mon Sep 17 00:00:00 2001
From: Joris
Date: Sun, 17 Jun 2018 23:24:47 +0200
Subject: Add ouest france parser

---
 src/executable/haskell/Utils/Either.hs | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 src/executable/haskell/Utils/Either.hs

(limited to 'src/executable/haskell/Utils/Either.hs')

diff --git a/src/executable/haskell/Utils/Either.hs b/src/executable/haskell/Utils/Either.hs
new file mode 100644
index 0000000..5d62dcc
--- /dev/null
+++ b/src/executable/haskell/Utils/Either.hs
@@ -0,0 +1,7 @@
+module Utils.Either
+  ( mapLeft
+  ) where
+
+mapLeft :: (a -> c) -> Either a b -> Either c b
+mapLeft f (Left l) = Left (f l)
+mapLeft _ (Right r) = (Right r)
-- 
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