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  1. maybeReify :: forall s (f :: Type -> Type) l . (Projectable (->) s f, Steppable (->) l (FreeF f s), Functor f) => Algebra (->) Maybe (s -> l)

    yaya Yaya.Applied

    Turns part of a structure inductive, so it can be analyzed, without forcing the entire tree.

  2. maybeTakeNext :: Day Maybe (XNor a) (Maybe a) -> Maybe a

    yaya Yaya.Fold.Common

    No documentation available.

  3. maybeGen :: Gen a -> Gen (Maybe a)

    checkers Test.QuickCheck.Instances.Maybe

    No documentation available.

  4. maybeBlank :: BPState (m :: Type -> Type) il bl -> !Bool

    commonmark Commonmark.Blocks

    No documentation available.

  5. maybeLazy :: BPState (m :: Type -> Type) il bl -> !Bool

    commonmark Commonmark.Blocks

    No documentation available.

  6. maybeName :: a -> Bool -> Maybe a

    dbus DBus.Generation

    No documentation available.

  7. maybeParseString :: Parser a -> String -> Maybe a

    dbus DBus.Internal.Address

    No documentation available.

  8. maybeParseString :: MonadThrow m => Parser a -> String -> m a

    dbus DBus.Internal.Types

    No documentation available.

  9. maybeEndOfExecutable :: String -> IO (Maybe String)

    end-of-exe EndOfExe2

    Can be used instead of os to check whether the executable ends in ".exe". The function returns IO Nothing if there is neither ys nor (ys ++ ".exe") names for executables in the search path. It can also search in other locations and its behaviour is OS dependent. For more information, please, refer to the link: https://hackage.haskell.org/package/directory-1.3.4.0/docs/System-Directory.html#v:findExecutable For more information, how the executable is searched, see also the following address: https://hackage.haskell.org/package/process-1.6.18.0/docs/System-Process.html#t:CmdSpec

  10. maybeToList :: Maybe a -> [a]

    foundation Foundation

    The maybeToList function returns an empty list when given Nothing or a singleton list when given Just.

    Examples

    Basic usage: 
    >>> maybeToList (Just 7)
[7]

    >>> maybeToList Nothing
[]
    One can use maybeToList to avoid pattern matching when combined with a function that (safely) works on lists: 
    >>> import GHC.Internal.Text.Read ( readMaybe )

>>> sum $ maybeToList (readMaybe "3")
3

>>> sum $ maybeToList (readMaybe "")
0

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