// Create a new map with string keys and integer values myMap := make(map[string]int) // Add some key-value pairs to the map myMap["one"] = 1 myMap["two"] = 2 myMap["three"] = 3 // Look up values by key fmt.Println(myMap["one"]) // Output: 1 fmt.Println(myMap["three"]) // Output: 3 // Iterate over the key-value pairs in a map for key, value := range myMap { fmt.Println(key, value) }In this example, we create a new map with string keys and integer values. We then add some key-value pairs to the map and look up values by key. Finally, we iterate over the key-value pairs in the map using a `for` loop. The package library for the generic map data structure in Go is the built-in package `map`. No external imports or installations are necessary to use this data structure.