casa-reoc-0.1.0.0: src/ReOC/Name/Occasional.hs

{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -Wall #-}

-- | The name @occasional@, which targets @()@. It names a field or constructor of @Likelihood@.
module ReOC.Name.Occasional (
  OccasionalLike (..),
) where

import Control.Lens (Optic)

class OccasionalLike p f x x' where
  occasional ::
    Optic p f x x' () ()

-- | Identity
instance (x' ~ ()) => OccasionalLike p f () x' where
  occasional = id