diff options
Diffstat (limited to 'libraries/base/GHC/List.lhs')
| -rw-r--r-- | libraries/base/GHC/List.lhs | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/libraries/base/GHC/List.lhs b/libraries/base/GHC/List.lhs index e004ded1e8..9b6cc2eb19 100644 --- a/libraries/base/GHC/List.lhs +++ b/libraries/base/GHC/List.lhs @@ -83,11 +83,8 @@ last [x] = x last (_:xs) = last xs last [] = errorEmptyList "last" #else --- eliminate repeated cases -last [] = errorEmptyList "last" -last (x:xs) = last' x xs - where last' y [] = y - last' _ (y:ys) = last' y ys +-- use foldl to allow fusion +last = foldl (\_ x -> x) (errorEmptyList "last") #endif -- | Return all the elements of a list except the last one. |