diff options
Diffstat (limited to 'src/Hakyll/Core/Util')
| -rw-r--r-- | src/Hakyll/Core/Util/Arrow.hs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/Hakyll/Core/Util/Arrow.hs b/src/Hakyll/Core/Util/Arrow.hs index 49cbf2b..dfcb7da 100644 --- a/src/Hakyll/Core/Util/Arrow.hs +++ b/src/Hakyll/Core/Util/Arrow.hs @@ -7,6 +7,8 @@ module Hakyll.Core.Util.Arrow , mapA ) where +import Prelude hiding (id) +import Control.Category (id) import Control.Arrow ( Arrow, ArrowChoice, (&&&), arr, (>>^), (|||) , (>>>), (***) ) @@ -30,7 +32,7 @@ unitA = constA () mapA :: ArrowChoice a => a b c -> a [b] [c] -mapA f = arr listEither >>> arr id ||| (f *** mapA f >>> arr (uncurry (:))) +mapA f = arr listEither >>> id ||| (f *** mapA f >>> arr (uncurry (:))) where listEither [] = Left [] listEither (x : xs) = Right (x, xs) |