Sottti

// Internal.kt file

// Visible to everyone in the same module
internal const val numberThree = 3

// Visible to everyone in the same module
internal open class User() {
    // Visible to everyone in the same module that has visibility on User
    internal val numberEight = numberThree.plus(5)
}

Sottti

// AnotherFile.kt file

// numberThree is visible to any other file because it's public
// numberEight is visible to any other file because User and numberEight are public
// numberEleven is visible to any other file because Moderator and numberEleven are public
private const val numberTwentyTwo = numberThree + User().numberEight + Moderator().numberEleven

Sottti

// Public.kt file

// Visible everywhere
public const val numberThree = 3

// Visible everywhere
public open class User() {
    // Visible to everyone with visibility on the User class
    public val numberEight = numberThree.plus(5)
}

Sottti

// Protected.kt file

// Visible inside this file
private const val numberThree = 3

// Visible inside this file
private open class User() {
    // Visible inside the User class and subclasses
    protected val numberEight = numberThree.plus(5)
}

Sottti

// Private.kt file

// Visible just inside this file
private const val numberThree = 3

// Visible just inside this file
private class User() {
    // Visible just inside the user class
    private val numberEight = numberThree.plus(5)
}

Sottti

data class User(
        val name: String,
        val surname: String = "",
        val address: String = "") {

    class Builder {
        private lateinit var name : String
        private var surname : String = ""
        private var address : String = ""

Sottti

@Entity(tableName = "Users")
data class UserRM(
  
    @PrimaryKey
    @ColumnInfo(name = "id")
    val id: Int,

    @ColumnInfo(name = "name")
    val name: String,

Sottti

val steveJobs= User("Steve Jobs", 56)
val steveJobsToday= steveJobs.copy(age = 63)

Sottti

data class User(val name: String, val age: Int) {
  var address : String = ""
}

Sottti

val steveJobs= User("Steve Jobs", 56)

fun print() {
  val (name, age) = steveJobs
  println("$name, $age years of age") // prints "Steve Jobs, 56 years of age"

  steveJobs.component1() // name
  steveJobs.component2() // age
}