From 86c1b1301359691dbebf04cd0e603942b7961eb4 Mon Sep 17 00:00:00 2001
From: Steven Degutis <steven.degutis@gmail.com>
Date: Sat, 17 Mar 2012 12:47:22 -0500
Subject: [PATCH] types

---
 about_types.go      | 13 +++++++++++++
 setup_koans_test.go |  1 +
 2 files changed, 14 insertions(+)
 create mode 100644 about_types.go

diff --git a/about_types.go b/about_types.go
new file mode 100644
index 0000000..a5a1131
--- /dev/null
+++ b/about_types.go
@@ -0,0 +1,13 @@
+package go_koans
+
+type coolNumber int
+
+func (cn coolNumber) double() int {
+  return int(cn) * 2
+}
+
+func aboutTypes() {
+  i := coolNumber(4)
+  assert(i == coolNumber(__int__)) // values can be converted between compatible types
+  assert(i.double() == __int__)    // you can add methods on any type you define
+}
diff --git a/setup_koans_test.go b/setup_koans_test.go
index 28b994c..6cdcde6 100644
--- a/setup_koans_test.go
+++ b/setup_koans_test.go
@@ -22,6 +22,7 @@ func TestKoans(t *testing.T) {
   aboutStrings()
   aboutArrays()
   aboutSlices()
+  aboutTypes()
   aboutControlFlow()
   aboutEnumeration()
   aboutAnonymousFunctions()