Hoogle Search

Within LTS Haskell 24.32 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. mapMaybe :: Enum key => (a -> Maybe b) -> EnumMap key a -> EnumMap key b

   regex-tdfa	Data.IntMap.EnumMap2

   No documentation available.

2. mapMaybeWithKey :: Enum key => (key -> a -> Maybe b) -> EnumMap key a -> EnumMap key b

   regex-tdfa	Data.IntMap.EnumMap2

   No documentation available.

3. returnMayBeNull :: Callable -> Bool

   haskell-gi	Data.GI.CodeGen.API

   No documentation available.

4. wrapMaybe :: Arg -> CodeGen e Bool

   haskell-gi	Data.GI.CodeGen.Callable

   Given an argument to a function, return whether it should be wrapped in a maybe type (useful for nullable types). We do some sanity checking to make sure that the argument is actually nullable (a relatively common annotation mistake is to mix up (optional) with (nullable)).

5. returnMayBeNull :: Callable -> Bool

   haskell-gi	Data.GI.GIR.Callable

   No documentation available.

6. newtype FromMaybe b

   foldl	Control.Foldl.NonEmpty

   instance Monad m => Semigroup (FromMaybe m a) where
   mappend (FromMaybe f) (FromMaybe g) = FromMaybeM (f . Just . g)
   

7. FromMaybe :: (Maybe b -> b) -> FromMaybe b

   foldl	Control.Foldl.NonEmpty

   No documentation available.

8. appFromMaybe :: FromMaybe b -> Maybe b -> b

   foldl	Control.Foldl.NonEmpty

   No documentation available.

9. indexEndMaybe :: ShortText -> Int -> Maybe Char

   text-short	Data.Text.Short

   Lookup i-th code-point from the end of ShortText. Returns Nothing if out of bounds.

   indexEndMaybe (singleton c) 0 == Just c
   

   indexEndMaybe t 0 == fmap snd (unsnoc t)
   

   indexEndMaybe mempty i == Nothing
   

10. indexMaybe :: ShortText -> Int -> Maybe Char

    text-short	Data.Text.Short

    Lookup i-th code-point in ShortText. Returns Nothing if out of bounds.

    indexMaybe (singleton c) 0 == Just c
    

    indexMaybe t 0 == fmap fst (uncons t)
    

    indexMaybe mempty i == Nothing
    

Page 155 of many | Previous | Next