diff options
Diffstat (limited to 'src/GF/Data/Operations.hs')
| -rw-r--r-- | src/GF/Data/Operations.hs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/GF/Data/Operations.hs b/src/GF/Data/Operations.hs index 9bed80392..024318594 100644 --- a/src/GF/Data/Operations.hs +++ b/src/GF/Data/Operations.hs @@ -15,7 +15,10 @@ infixl 9 !? ifNull :: b -> ([a] -> b) -> [a] -> b ifNull b f xs = if null xs then b else f xs - + +onSnd :: (a -> b) -> (c,a) -> (c,b) +onSnd f (x, y) = (x, f y) + -- the Error monad data Err a = Ok a | Bad String -- like Maybe type with error msgs |