From 3624c712d72d246f21d4e710cec7c11e052e0326 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Tue, 9 Dec 2025 16:32:32 +0100
Subject: Add the haskell book

---
 Haskell-book/11/Hutton.hs | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 Haskell-book/11/Hutton.hs

(limited to 'Haskell-book/11/Hutton.hs')

diff --git a/Haskell-book/11/Hutton.hs b/Haskell-book/11/Hutton.hs
new file mode 100644
index 0000000..539ba65
--- /dev/null
+++ b/Haskell-book/11/Hutton.hs
@@ -0,0 +1,13 @@
+module Hutton where
+
+data Expr
+    = Lit Integer
+    | Add Expr Expr
+
+eval :: Expr -> Integer
+eval (Lit x)   = x
+eval (Add x y) = (eval x) + (eval y)
+
+printExpr :: Expr -> String
+printExpr (Lit x) = show x
+printExpr (Add x y) = (printExpr x) ++ " + " ++ (printExpr y)
-- 
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