Update go.md

Lazy input with defer, independent of where where its defined in codeland

go.md

@@ -422,10 +422,24 @@ func main() {
   fmt.Println("Working...")
 }
 ```
+
 {: data-line="2,3,4"}
 
 Lambdas are better suited for defer blocks.
 
+```go
+func main() {
+  var d = int64(0)
+  defer func(d *int64) {
+    fmt.Printf("& %v Unix Sec\n", *d)
+  }(&d)
+  fmt.Print("Done ")
+  d = time.Now().Unix()
+}
+```
+{: data-line="3,4,5"}
+The defer func uses current value of d, unless we use a pointer to get final value at end of main.
+
 ## Structs
 {: .-three-column}