[Go] Map demo.

package main

import (
    "log"
)

func main() {
    // Declare an empty map.
    m := make(map[string]string)

    // Insert key/value pairs
    m["Go"] = "Beego"
    m["Python"] = "Django"
    m["Ruby"] = "Rails"
    m["PHP"] = "Laravel"

    // Call the value by the key.
    if !(m["Go"] == "Beego") {
        log.Fatal("Wrong value")
    }

}