Day34 of #100DaysOfCode

#CodeTogether Day 34/100

Hii folks 🙌

Today I learned more concepts in Kotlin — including classes, objects, and conditionals as well as to create an interactive app following Unit 1 of Android Basics in Kotlin.

Unit 1: Kotlin basics

Pathway 4: Add a button to an app

Source: https://developer.android.com/courses/android-basics-kotlin/course

Classes and object instances in Kotlin

• Call the random() function on an IntRange to generate a random number: (1..6).random()

fun main() {
    val diceRange = 1..6
    val randomNumber = diceRange.random()
    println("Random number: ${randomNumber}")
}

• Classes are like a blueprint of an object. They can have properties and behaviors, implemented as variables and functions.

class Dice {
    var sides = 6
    fun roll() {
        val randomNumber = (1..6).random()
        println(randomNumber)
    }
}

• An instance of a class represents an object, often a physical object, such as a dice. We can call the actions on the object and change its attributes.

fun main() {
    val myFirstDice = Dice()
    println(myFirstDice.sides)
    myFirstDice.roll()
}

• We can supply values to a class when you create an instance. For example: class Dice(val numSides: Int) and then create an instance with Dice(6).

class Dice (val numSides: Int) {
    fun roll(): Int {
        return (1..numSides).random()
    }
}

• Functions can return something. Specify the data type to be returned in the function definition, and use areturnstatement in the function body to return something. For example: fun example(): Int { return 5 }

fun roll(): Int {
     val randomNumber = (1..6).random()
     return randomNumber
}

That is all for Day34 ✅

Thanks for reading, See you tomorrow!