Hedgehog.Internal.Opaque

Documentation

newtype Opaque a

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 Ref v =
    Ref (v (Opaque (IORef Int)))

Constructors

Opaque

Fields

• unOpaque :: a

Instances

Eq a => Eq (Opaque a)

Methods

(==) :: Opaque a -> Opaque a -> Bool

(/=) :: Opaque a -> Opaque a -> Bool

Ord a => Ord (Opaque a)

Methods

compare :: Opaque a -> Opaque a -> Ordering

(<) :: Opaque a -> Opaque a -> Bool

(<=) :: Opaque a -> Opaque a -> Bool

(>) :: Opaque a -> Opaque a -> Bool

(>=) :: Opaque a -> Opaque a -> Bool

max :: Opaque a -> Opaque a -> Opaque a

min :: Opaque a -> Opaque a -> Opaque a

Show (Opaque a)

Methods

showsPrec :: Int -> Opaque a -> ShowS

show :: Opaque a -> String

showList :: [Opaque a] -> ShowS