Kotlin: sample code that converts individual characters of a string to Integers

numberString2individualCharacters.kt

fun main(args: Array<String>) {
    val someText = "ABC1234567890"
    for (i in (0 .. (someText.length-1))){
        println(" number[$i]: ${someText[i]}")
        println("(number[$i] is Char): ${(someText[i] is Char)}")
        /* toInt return ascii dev code of a Character,
        _not_ the Character as Int in case of numbers */
        println(" number[$i].toInt(): ${someText[i].toInt()}")
        println(" number[$i].toString().toIntOrNull(): " +
                "${someText[i].toString().toIntOrNull()}")
        /* ascii to Int : 48 is ascii code for '0' */
        println(" number[$i].toInt() - 48: ${someText[i].toInt() - 48}")
        /* subtracts character zero ('0') thats ascii dec code is 48 */
        println(" number[$i] - '0': ${someText[i] - '0'}")
        println("-----")
    }
}