From 5bdaa1e4ffe40add10f000ee993e6b500c419a37 Mon Sep 17 00:00:00 2001
From: Joe Zhao <ztuowen@gmail.com>
Date: Sat, 9 Aug 2014 10:58:03 +0800
Subject: add files from home for previous chapters and sandboxes

---
 shape.hs | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 shape.hs

(limited to 'shape.hs')

diff --git a/shape.hs b/shape.hs
new file mode 100644
index 0000000..0f8eca1
--- /dev/null
+++ b/shape.hs
@@ -0,0 +1,6 @@
+data Shape = Circle Float Float Float | Rectangle Float Float Float Float 
+    deriving (Show)
+
+area :: Shape -> Float
+area (Circle _ _ r) = pi * r ^ 2
+area (Rectangle x1 y1 x2 y2) = (abs $ x1 - x2) * (abs $ y1 - y2)
-- 
cgit v1.2.3-70-g09d2