2018.11.7

2018.11.7

var count = 0
        btn_vararg_generic.setOnClickListener{
            tv_function_result.text = when(count % 3){
                0 -> appendString<String> ("00","001","002","003","004")
                1 -> appendString<Int> ("prime numbers less than 10", 2,3,5,7)
                else -> appendString<Double> ("lalal", 5.20, 6.18, 11.11, 12.12)
            }
            count ++
        }

        fun <T> Array<T>.swap(pos1: Int, pos2: Int){
            val tmp = this[pos1]
            this[pos1] = this[pos2]
            this[pos2] = tmp
        }