``` fun avoidNullsEarly{ val map = Has...

# getting-started

[dagguh]

fun avoidNullsEarly{
        val map = HashMap<Int, Int>()
        fun plusOne(i: Int): Int = i + 1
        arrayOf(1, 2, 3)
            .map { Pair(map[it]!!, it) }
            .map { plusOne(it.first) }
    }