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Within LTS Haskell 24.36 (ghc-9.10.3)
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maybeWrite :: Storable e => Vector s e -> Int -> e -> ST s Boolstorablevector Data.StorableVector.ST.Strict Returns True if the element could be written and False if the index was out of range.
runSTVector (do arr <- new_ 10; foldr (\c go i -> maybeWrite arr i c >>= \cont -> if cont then go (succ i) else return arr) (error "unreachable") ['a'..] 0)
In future maybeWrite will replace write.-
Cabal-syntax Distribution.Compat.Prelude No documentation available.
maybeToLibraryName :: Maybe UnqualComponentName -> LibraryNameCabal-syntax Distribution.Types.LibraryName Convert the UnqualComponentName of a library into a LibraryName.
maybePlus :: (a -> Maybe a) -> a -> [a]hxt Data.Tree.NavigatableTree.XPathAxis collect all trees by moving into one direction, starting tree is not included
maybeStar :: (a -> Maybe a) -> a -> [a]hxt Data.Tree.NavigatableTree.XPathAxis collect all trees by moving into one direction, starting tree is included
maybeCons0 :: Maybe b -> [[b]]leancheck Test.LeanCheck.Tiers Like cons0 but lifted over a Maybe value. Only a Just value will be returned.
maybeCons1 :: Listable a => (a -> Maybe b) -> [[b]]leancheck Test.LeanCheck.Tiers Like cons1 but lifted over a Maybe result. This discard Nothing values. Only Just values are returned.
maybeCons2 :: (Listable a, Listable b) => (a -> b -> Maybe c) -> [[c]]leancheck Test.LeanCheck.Tiers Like cons2 but lifted over a Maybe result. This discard Nothing values. Only Just values are returned. Useful when declaring generators which have pre-conditions:
data Fraction = Fraction Int Int mkFraction _ 0 = Nothing mkFraction n d = Fraction n d instance Listable Fraction where tiers = maybeCons2 mkFraction
maybeRead :: Read a => String -> Maybe aghc-boot GHC.Settings.Utils No documentation available.
maybeReadFuzzy :: Read a => String -> Maybe aghc-boot GHC.Settings.Utils No documentation available.