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  1. maybeynaopt :: String -> RawOpts -> Maybe YNA

    hledger-lib Hledger.Data.RawOptions

    No documentation available.

  2. maybeynopt :: String -> RawOpts -> Maybe Bool

    hledger-lib Hledger.Data.RawOptions

    No documentation available.

  3. maybeNullOrUndefined :: ToJSVal value => value -> JSM (Maybe JSVal)

    jsaddle Language.Javascript.JSaddle.Value

    Convert a JSVal to a Maybe JSVal (converting null and undefined to Nothing)

  4. maybeNullOrUndefined' :: ToJSVal value => (JSVal -> JSM a) -> value -> JSM (Maybe a)

    jsaddle Language.Javascript.JSaddle.Value

    No documentation available.

  5. maybeCompatible :: Eq a => T a -> T a -> Maybe a

    numeric-prelude Number.ResidueClass.Check

    No documentation available.

  6. maybePositive :: (Additive a, MeetSemiLattice a) => a -> Maybe (Positive a)

    numhask NumHask.Data.Positive

    Constructor which returns Nothing if a negative number is supplied. 

    >>> maybePositive (-one)
Nothing

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

    basic-prelude CorePrelude

    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

  8. maybeSelectCurrentEntry :: EventM n (FileBrowser n) ()

    brick Brick.Widgets.FileBrowser

    If the browser's current entry is selectable according to fileBrowserSelectable, add it to the selection set and return. If not, and if the entry is a directory or a symlink targeting a directory, set the browser's current path to the selected directory. Otherwise, return the browser state unchanged.

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

    classy-prelude ClassyPrelude

    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

  10. maybeArray :: (PersistField a, PersistField [a]) => SqlExpr (Value (Maybe [a])) -> SqlExpr (Value [a])

    esqueleto Database.Esqueleto.PostgreSQL

    Coalesce an array with an empty default value

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