Convert http.Handler router into http.HandlerFunc type

.gitignore

@@ -0,0 +1,2 @@
+tmp
+

main.go

@@ -5,12 +5,30 @@ import (
 	"net/http"
 )
 
-func handlerFunc(w http.ResponseWriter, r *http.Request) {
+func homeHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html; charset=utf8")
 	fmt.Fprint(w, "<h1>Welcome to my awesome site!</h1>")
 }
+func contactHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html; charset=utf8")
+	fmt.Fprint(w, "<h1>Contact Page</h1><p>To get in touch, email me at <a href=\"mailto:example@example.com\">example@example.com</a></p>")
+}
+
+var pathHandler http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
+	switch r.URL.Path {
+	case "/":
+		homeHandler(w, r)
+	case "/contact":
+		contactHandler(w, r)
+	default:
+		w.Header().Set("Content-Type", "text/html; charset=utf8")
+		w.WriteHeader(http.StatusNotFound)
+		fmt.Fprint(w, "404 page not found")
+	}
+	fmt.Fprintf(w, "<hr><p>%s</p>", r.URL.Path)
+}
 
 func main() {
-	http.HandleFunc("/", handlerFunc)
 	fmt.Println("Starting the server on :3000...")
-	http.ListenAndServe(":3000", nil)
+	http.ListenAndServe(":3000", pathHandler)
 }