Function Inside Function
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fun main(args : Array<String>){
//setWord("yii")
setWordTwo("hallo")
}
fun setWord(message: String){
fun printMessage(text: String){
println(text)
}
printMessage(message)
}
fun setWordTwo(message: String){
fun printMessage(){
println(message)
}
printMessage()
}
fun sum(valueA: Int, valueB: Int, valueC: Int): Int{
if(valueA == 0){
throw IllegalArgumentException("valueA must be better than 0")
}
if(valueB == 0){
throw IllegalArgumentException("valueB must be better than 0")
}
if(valueC == 0){
throw IllegalArgumentException("valueC must be better than 0")
}
return valueA + valueB
}
fun sumTwo(valueA: Int, valueB: Int, valueC: Int): Int{
fun validateNumber(value: Int){
if(value == 0){
throw IllegalArgumentException("value must be better than 0")
}
}
validateNumber(valueA)
validateNumber(valueB)
validateNumber(valueC)
return valueA + valueB
}
//extensions function
fun sumTwoEF(valueA: Int, valueB: Int, valueC: Int): Int{
fun Int.validateNumber(){
if(this == 0){
throw IllegalArgumentException("value must be better than 0")
}
}
valueA.validateNumber()
valueB.validateNumber()
valueC.validateNumber()
return valueA + valueB
}
Kotlin
INFO