kalaiselvan369

import java.sql.Date


fun main() {
    exploreRangeTo()

    val scoreBoard = ScoreBoard()
    scoreBoard + 6
    println(scoreBoard.displayScore())
}

kalaiselvan369

fun main() {
    "Hi".singleQuote()
    "Hello".strangeQuote()

    val player = Player(name = "Sachin", team = "India")
    player.hobbies(player.name)
}

fun String.singleQuote() = "'${this}'"
fun String.doubleQuote() = "\"${this}\""

kalaiselvan369

package using_when

import kotlin.random.Random

fun main() {

    val a = Random.nextInt(2)

    when (a) {
        2 -> println("even")

kalaiselvan369

package enumerations


fun main() {
    val east = Direction.EAST
    println(east.notation)
    println(east.oppositeDirection())

    //println(east.opposite()) // not possible, you cannot invoke extension function declared inside class
    east.westOpposite()

kalaiselvan369

fun main() {

    val a: Int? = null

    println(a)

    var b: String? = "Hi"

    // !! means non null assertion
    for (char in b!!) {

kalaiselvan369

package data_classes

data class Machine(val name: String)

enum class ShipType {
    CRUISE,
    WAR,
    GOODS
}