Compat.hs

{-# LANGUAGE CPP, NoImplicitPrelude #-}
module Data.Bool.Compat (
  module Base
, bool
) where

import Data.Bool as Base

#if !(MIN_VERSION_base(4,7,0))
-- | Case analysis for the 'Bool' type.
-- @bool a b p@ evaluates to @a@ when @p@ is @False@, and evaluates to @b@
-- when @p@ is @True@.
--
-- /Since: 4.7.0.0/
bool :: a -> a -> Bool -> a
bool f _ False = f
bool _ t True  = t
#endif