safeCast

Casts the given value to the class represented by this KClass object. Returns null if the value is null or if it is not an instance of this class.

fun <T : Any> KClass<T>.safeCast(value: Any?): T?(source)

data class Person(val name: String, val age: Int)

fun main() {
    val value: Any = Person("Alice", 30)

    // Cast to Person
    val person: Person? = Person::class.safeCast(value)
    // Cast to String (will return null)
    val string: String? = String::class.safeCast(value)

    println(person?.name)   // prints: Alice
    println(string)         // prints: null
}

Source