Maps

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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) }
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