diff --git a/_demo/go/maphash/maphash.go b/_demo/go/maphash/maphash.go
new file mode 100644
index 00000000..44524b04
--- /dev/null
+++ b/_demo/go/maphash/maphash.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"hash/maphash"
+)
+
+func main() {
+	var h maphash.Hash
+	h.WriteString("hello")
+	fmt.Printf("0x%x\n", h.Sum64())
+
+	h.Reset()
+	h.WriteString("world")
+	fmt.Printf("0x%x\n", h.Sum64())
+
+	h.Reset()
+	h.WriteString("test")
+	v1 := h.Sum64()
+
+	h.Reset()
+	h.WriteString("test")
+	v2 := h.Sum64()
+
+	fmt.Printf("0x%x == 0x%x\n", v1, v2)
+}