Safe Haskell	Safe-Inferred
Language	Haskell2010

Hedgehog.Internal.Opaque

Synopsis

Documentation

Opaque values.

Useful if you want to put something without a Show instance inside something which you'd like to be able to display.

For example:

  data State v =
    State {
        stateRefs :: [Var (Opaque (IORef Int)) v]
      } deriving (Eq, Show)

Constructors

Opaque
Fields unOpaque :: a

Instances details

Eq a => Eq ( Opaque a) Source #
Instance details Defined in Hedgehog.Internal.Opaque Methods (==) :: Opaque a -> Opaque a -> Bool Source # (/=) :: Opaque a -> Opaque a -> Bool Source #
Ord a => Ord ( Opaque a) Source #
Instance details Defined in Hedgehog.Internal.Opaque Methods compare :: Opaque a -> Opaque a -> Ordering Source # (<) :: Opaque a -> Opaque a -> Bool Source # (<=) :: Opaque a -> Opaque a -> Bool Source # (>) :: Opaque a -> Opaque a -> Bool Source # (>=) :: Opaque a -> Opaque a -> Bool Source # max :: Opaque a -> Opaque a -> Opaque a Source # min :: Opaque a -> Opaque a -> Opaque a Source #
Show ( Opaque a) Source #
Instance details Defined in Hedgehog.Internal.Opaque Methods showsPrec :: Int -> Opaque a -> ShowS Source # show :: Opaque a -> String Source # showList :: [ Opaque a] -> ShowS Source #