diff --git a/helper/hashcode/hashcode.go b/helper/hashcode/hashcode.go
new file mode 100644
index 0000000000..1cc8fa1645
--- /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 0000000000..5406f40bf6
--- /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)
+		}
+	}
+}