```fun main args Array lt String gt print z a val pair = z t kotlinlang #announcements

```fun main(args: Array<String>) { print...

cypher121

07/08/2016, 2:10 PM

Copy code

fun main(args: Array<String>) {
    print('z' - 'a')
    val pair = 'z' to 'a'
    println(pair.first - pair.second)
}

first print will print 25, second will throw

java.lang.ClassCastException: java.lang.Character cannot be cast to java.lang.Number

. Is that a known issue?