package main

import ("fmt")

​

func main() {

  var a = map[string]string{"brand": "Ford", "model": "Mustang", "year": "1964", "day":""}

​

  val1, ok1 := a["brand"] // Checking for existing key and its value

  val2, ok2 := a["color"] // Checking for non-existing key and its value

  val3, ok3 := a["day"]   // Checking for existing key and its value

  _, ok4 := a["model"]    // Only checking for existing key and not its value

​

  fmt.Println(val1, ok1)

  fmt.Println(val2, ok2)

  fmt.Println(val3, ok3)

  fmt.Println(ok4)

}