OperatorOverridingAndInfix.kt

package main

data class Num(var value:Int)

infix fun Num.plus(num:Int)=value + num

operator fun Num.plus(num:Num)=value+num.value

fun main(){
    var result=Num(4) plus 3
    var result2=Num(1) + Num(3)
    println(result)
    println(result2)
}