kotlin-stdlib / kotlin.text / randomOrNull randomOrNull Common JVM JS Native 1.4 fun CharSequence.randomOrNull(): Char?(source) Returns a random character from this char sequence, or null if this char sequence is empty. Common JVM JS Native 1.4 fun CharSequence.randomOrNull(random: Random): Char?(source) Returns a random character from this char sequence using the specified source of randomness, or null if this char sequence is empty.