how to check if argument is a string or int

Question

I have wrote a function getResult() that has only one parameter.

• If the attached argument is of type Int, then the value returned is the value of the argument multiplied by 5.

• If the attached argument is of type String, the value returned is a character length.

• If the attached argument is of type other than Int and String, then the returned value is 0.

How can I write getResult() so it returns 6?

fun main() {
    val stringResult = getResult("Kotlin")
    val intResult = getResult(100)

    println(stringResult)
    println(intResult)
}

fun <T> getResult(args: T) {
    // ???
}

Answer 1

You can write something like this:

fun getResult(args: Any?): Int =
    when (args) {
        is Int -> args * 5
        is String -> args.length
        else -> 0
    }