diff options
Diffstat (limited to 'libraries')
| -rw-r--r-- | libraries/base/Data/Data.hs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libraries/base/Data/Data.hs b/libraries/base/Data/Data.hs index 5fcecc867a..c0a4495e14 100644 --- a/libraries/base/Data/Data.hs +++ b/libraries/base/Data/Data.hs @@ -1136,7 +1136,10 @@ consConstr = mkConstr listDataType "(:)" [] Infix listDataType :: DataType listDataType = mkDataType "Prelude.[]" [nilConstr,consConstr] --- | @since 4.0.0.0 +-- | For historical reasons, the constructor name used for @(:)@ is +-- @"(:)"@. In a derived instance, it would be @":"@. +-- +-- @since 4.0.0.0 instance Data a => Data [a] where gfoldl _ z [] = z [] gfoldl f z (x:xs) = z (:) `f` x `f` xs |