KotlinBasics.kt

package dev.fultz.counter

fun main(){
    //immutable variable
    //TODO: Add new functions

//    val myString: String = "Android Masterclass"
//    val myFloat: Float = 13.37F
//    val myDouble: Double = 471.4288
//    val myByte: Byte = 25
//    val myInt: Int = 2020
//    val myLong: Long = 18881234567
//    val myBoolean: Boolean = true
//    val myChar = "a"
//
//    println("$myString, $myFloat, $myDouble, $myByte, $myInt, $myLong, $myBoolean, $myChar")
//
//    var result = 5+3
//    val a = 5.0
//    val b = 3
//    var resultDouble : Double
//    resultDouble = (a / b).toDouble()
//    println("$resultDouble")
//
//    val isEqual = 5==5
//    println("isEqual is $isEqual")
//
//    val isNotEqual = 5!=5
//    println("isNotEqual is $isNotEqual")
//
//    println("is5Greater3 ${5>3}")
//    println("is5LowerEqual3 ${5<= 3}")
//
//    var myNum = 5
//    myNum += 3
//    myNum *= 4
//    myNum++
//    println("myNum is $myNum")
//    println("myNum is ${myNum++}")
//    println("myNum is ${++myNum}")
//    println("myNum is ${--myNum}")

//    var heightPerson1 = 170
//    var heightPerson2 = 150
//
//    if (heightPerson1 > heightPerson2){
//        println("use raw force")
//    }
//    else if (heightPerson1 == heightPerson2){
//        println("fair match")
//    }
//    else {
//        println("use technique")
//    }

//    val setAge = 31
//
//    if(setAge >= 30)
//        println("You're old")
//
//    if (setAge >= 21){
//        println("You may buy alcohol")
//    } else if (setAge >= 18){
//        println("You may vote")
//    } else if (setAge >= 16){
//        println("You may drive")
//    } else {
//        println("You are too young")
//    }
//
//    var name = "Caleb"
//    if(name == "Caleb") {
//        println("Welcome home $name!")
//    }else{
//        println("Get out of here $name!")
//    }

//    var isRainy = true
//    if(isRainy)
//        println("It's Rainy")

//    var season = 1
//    when(season){
//        1 -> println("It's Spring!")
//        2 -> println("It's Summer!")
//        3 -> {
//            println("It's Fall!")
//            println("It's Autumn!")
//        }
//        4 -> println("It's Winter!")
//        else -> println("Invalid Season")
//    }
//
//    var month = 2
//    when(month){
//        in 3..5 -> println("Spring")
//        in 6..8 -> println("Summer")
//        in 9..11 -> println("Fall")
//        12, 1, 2 -> println("Winter")
//        else -> println("Invalid")
//    }


    val age = 25

    when(age){
        !in 0..20 -> println("You may drink")
        in 18..20 ->println("You may vote")
        16,17 -> println("You may drive")
        else -> println("You are too young")
    }

    var x : Any = 542

    when(x){
        is Int -> println("$x is an Int")
        is Double -> println("$x is a Double")
        is String -> println("$x is a String")
        else -> println("$x is none of the above")
    }

}