Frequent.hs

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

-- | The name @frequent@, which targets @()@. It names a field or constructor of @Likelihood@.
module ReOC.Name.Frequent (
  FrequentLike (..),
) where

import Control.Lens (Optic)

class FrequentLike p f x x' where
  frequent ::
    Optic p f x x' () ()

-- | Identity
instance (x' ~ ()) => FrequentLike p f () x' where
  frequent = id