From 6a0d7f5c434c3564d0119befb6799fd77581050a Mon Sep 17 00:00:00 2001
From: Paul Oliver <contact@pauloliver.dev>
Date: Fri, 3 Jan 2025 11:01:20 -0800
Subject: Initial

---
 ch10_10.0.example.hs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 ch10_10.0.example.hs

(limited to 'ch10_10.0.example.hs')

diff --git a/ch10_10.0.example.hs b/ch10_10.0.example.hs
new file mode 100644
index 0000000..2ab1d84
--- /dev/null
+++ b/ch10_10.0.example.hs
@@ -0,0 +1,16 @@
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE TypeFamilies #-}
+
+import Data.Kind (Type)
+
+type Exp a = a -> Type
+
+type family Eval (e :: Exp a) :: a
+
+data Fst :: (a, b) -> Exp a
+
+data Snd :: (a, b) -> Exp b
+
+type instance Eval (Fst '(a, b)) = a
+
+type instance Eval (Snd '(a, b)) = b
-- 
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