Maps

fun main(args : Array<String>){
  // keyValue()
  //printMapsKeys()
  //printValue()
  printChangeToMutable()
}

fun keyValue(){
    val capital = mapOf(
    "Jakarta" to "Indonesia",
    "London" to "England",
    "New Delhi" to "India"
    )
    println(capital["Jakarta"]) // tidak ada null
    //println(capital.getValue(Jakarta)) // error
    
}

fun printMapsKeys(){
      val capital = mapOf(
    "Jakarta" to "Indonesia",
    "London" to "England",
    "New Delhi" to "India"
    )
    
    val mapKeys = capital.keys
    println(mapKeys)
}

fun printValue(){
    val capital = mapOf(
        "Jakarta" to "Indonesia",
        "London" to "England",
        "New Delhi" to "India"
    )
    val mapValues = capital.values
    print(mapValues)
}

fun printChangeToMutable(){
        val capital = mapOf(
        "Jakarta" to "Indonesia",
        "London" to "England",
        "New Delhi" to "India"
    )
    val mutableCapital = capital.toMutableMap()
    mutableCapital.put("Amsterdam", "Netherlands")
    mutableCapital.put("Berlin", "Germany")
    print(mutableCapital)
}