Adds update into a map eg

Author: hegdeashwin

codes/ch5_maps/update-into-a-map.go

@@ -0,0 +1,31 @@
+package main
+
+import "fmt";
+
+func GetPrefix(name string) (prefix string) {
+
+	/**
+	 * Short hand way to declare and initialize map
+	 */
+	prefixMap := map[string] string {
+		"Ashwin": "Sr. Fullstack Engineer",
+		"Kumar": "Sr. Engineering Manager",
+		"Saju": "Sr. Solution Architect",
+		"Ajay": "Sr. Solution Architect", // comma is needed here
+	}
+
+	/**
+	 * Perform update operation on map.
+	 */
+	prefixMap["Kumar"] = "Delivery Manager"
+	prefixMap["Ajay"] = "Sr. Project Manager"
+
+	return prefixMap[name]
+}
+
+func main() {
+
+	fmt.Println("What is Kumar's role? He is " + GetPrefix("Kumar"))
+	fmt.Println("What is Ajay's role? He is " + GetPrefix("Ajay"))
+
+}