1 files changed, 24 insertions, 0 deletions
diff --git a/hashbydata.go b/hashbydata.go
new file mode 100644
index 0000000..83874f3
--- /dev/null
+++ b/hashbydata.go
@@ -0,0 +1,24 @@
+package main
+
+import "fmt"
+
+type (
+	empty struct{}
+	t     interface{}
+	set   map[t]empty
+)
+
+func main() {
+	m := make(map[t]string)
+	fmt.Println(fmt.Sprintf("%+v", m))
+	m[struct{ x string }{x: "hello there"}] = "hello there"
+	fmt.Println(fmt.Sprintf("%+v", m))
+
+	m[struct{ x string }{x: "hello there"}] = "goodbye"
+	fmt.Println(fmt.Sprintf("%+v", m))
+
+	ptr := &struct{ x string }{x: "hello there"}
+	pv := *ptr
+	m[pv] = "ptr"
+	fmt.Println(fmt.Sprintf("%+v", m))
+}