Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/prelude/PreludeText/Show_Maybe.hs

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


module Prelude(Show(..)) where

instance  (Show a) => Show (Maybe a)  where
  showsPrec p Nothing  = showString "Nothing"
  showsPrec p (Just a) = showParen (p >= 10)
                                 (showString "Just " . showsPrec 10 a)

  showsType a = showString "(Maybe " . showsType ta . showChar ')'
		  where (Just ta) = a


Bell Labs OSI certified Powered by Plan 9

(Return to Plan 9 Home Page)

Copyright © 2021 Plan 9 Foundation. All Rights Reserved.
Comments to webmaster@9p.io.