From 3db41fe9f66f842e114a28ab3b9bcf7f61a14f2b Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Wed, 20 Aug 2014 22:09:40 -0700
Subject: [PATCH] helper/hashcode for generating hashcodes

---
 helper/hashcode/hashcode.go      | 10 ++++++++++
 helper/hashcode/hashcode_test.go | 16 ++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 helper/hashcode/hashcode.go
 create mode 100644 helper/hashcode/hashcode_test.go

diff --git a/helper/hashcode/hashcode.go b/helper/hashcode/hashcode.go
new file mode 100644
index 000000000..1cc8fa164
--- /dev/null
+++ b/helper/hashcode/hashcode.go
@@ -0,0 +1,10 @@
+package hashcode
+
+import (
+	"hash/crc32"
+)
+
+// String hashes a string to a unique hashcode.
+func String(s string) int {
+	return int(crc32.ChecksumIEEE([]byte(s)))
+}
diff --git a/helper/hashcode/hashcode_test.go b/helper/hashcode/hashcode_test.go
new file mode 100644
index 000000000..5406f40bf
--- /dev/null
+++ b/helper/hashcode/hashcode_test.go
@@ -0,0 +1,16 @@
+package hashcode
+
+import (
+	"testing"
+)
+
+func TestString(t *testing.T) {
+	v := "hello, world"
+	expected := String(v)
+	for i := 0; i < 100; i++ {
+		actual := String(v)
+		if actual != expected {
+			t.Fatalf("bad: %#v", actual)
+		}
+	}
+}