Illegal escape: ''0''

What is the correct way to escape ASCII 0 in Kotlin?

fun main(args : Array<String>) {

  val x = StringBuffer(20)

  x.append("asdf")

  x.append('0')

}

It's possible to convert Int to Сhar with toChar() call.

x.append(0.toChar())

You can also write an extension for Int if you need a lot of such conversions:

val Int.u: Char get() = this.toChar()

fun main(args : Array<String>) {
  val x = StringBuffer(20)
  x.append(0.u)
  
  println(“${49.u}${9650.u}”)
}