REST Server setup using Gorilla mux in Golang

mux.go

import "github.com/gorilla/mux"

// Setup and create handlers
router := mux.NewRouter().StrictSlash(true)
router.HandleFunc("/api/example", getExample).Methods("GET")

// Able to set up a function to execute before each request
_ = http.ListenAndServe(":"+port, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
	// Do something here
	router.ServeHTTP(w, r)
}))

// Example handler
func getExample(w http.ResponseWriter, r *http.Request) {
	msg := []byte("Hello World")
	w.Header().Set("Content-Type", "some/type")
	w.Write(msg)
}