From b906da9afa6802bf8104dfabe26b67a6c673af91 Mon Sep 17 00:00:00 2001
From: Justin Bedo <cu@cua0.org>
Date: Sun, 1 Jan 2023 17:25:36 +1100
Subject: slight tidy

---
 src/PPL/Internal.hs | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/src/PPL/Internal.hs b/src/PPL/Internal.hs
index a729d3d..201a3aa 100644
--- a/src/PPL/Internal.hs
+++ b/src/PPL/Internal.hs
@@ -26,10 +26,8 @@ split (Tree r (t : ts)) = (t, Tree r ts)
 {-# INLINE randomTree #-}
 randomTree :: RandomGen g => g -> Tree
 randomTree g = let (a, g') = random g in Tree a (randomTrees g')
-
-{-# INLINE randomTrees #-}
-randomTrees :: RandomGen g => g -> [Tree]
-randomTrees g = let (g1, g2) = R.split g in randomTree g1 : randomTrees g2
+  where
+    randomTrees g = let (g1, g2) = R.split g in randomTree g1 : randomTrees g2
 
 {-# INLINE mutateTree #-}
 mutateTree :: RandomGen g => Double -> g -> Tree -> Tree
@@ -37,12 +35,10 @@ mutateTree p g (Tree a ts) =
   let (r, g1) = random g
       (b, g2) = random g1
   in Tree (if r < p then b else a) (mutateTrees p g2 ts)
-
-{-# INLINE mutateTrees #-}
-mutateTrees :: RandomGen g => Double -> g -> [Tree] -> [Tree]
-mutateTrees p g (t:ts) =
-  let (g1, g2) = R.split g
-  in mutateTree p g1 t : mutateTrees p g2 ts
+  where
+    mutateTrees p g (t:ts) =
+      let (g1, g2) = R.split g
+      in mutateTree p g1 t : mutateTrees p g2 ts
 
 newtype Prob a = Prob {runProb :: Tree -> a}
 
@@ -71,11 +67,12 @@ score = scoreLog . Exp . log . max eps
 scoreLog :: Log Double -> Meas ()
 scoreLog = Meas . tell . Product
 
+{-# INLINE sample #-}
 sample :: Prob a -> Meas a
 sample = Meas . lift
 
 {-# INLINE samples #-}
 samples :: forall a. Meas a -> Tree -> [(a, Log Double)]
-samples (Meas m) t = map (second getProduct) $ runProb f t
+samples (Meas m) = map (second getProduct) . runProb f
   where
     f = runWriterT m >>= \x -> (x:) <$> f
-- 
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