data class Person(val name: String, val age: Int)

val person = Person("Alice", 29)
val (name, age) = person

println(name) // Alice
println(age) // 29

Также можно использовать мульти-декларации в циклах, чтобы итерироваться по спискам объектов и распаковывать значения свойств:

val people = listOf(Person("Alice", 30), Person("Bob", 40))
for ((name, age) in people) {
    println("$name is $age years old")
}

// Alice is 30 years old
// Bob is 40 years old

val list = listOf("apple", "banana", "orange")
val (first, second, third) = list

println(first) // apple
println(second) // banana
println(third) // orange

val history = "history.txt" // Filesystem path to the history file.

// Configure the LineEditor.
val config = LineEditorConfig(
    maxHistorySize = 100,
    completionType = CompletionType.LIST,
    // See the documentation for more options.
)

// Create a new LineEditor instance.
val editor = SimpleLineEditor(
    linePrefix = "> ",
    config = config,
).also { editor ->
    // Set up the completer and highlighter.
    editor
        // Provides file completion (optional).
        .withCompleter(SimpleFileCompleter())
        // Provides color highlighting (optional).
        .withHighlighter(SimpleHighlighter())

    // Load the history from the disk (throws LineEditorError if it fails).
    editor.loadHistory(history).getOrThrow()
}

println("Welcome to the LineEditor example!")
println("Press Ctrl+C to exit")

while (true) {
    // Read a line from the user.
    editor.readLine()
        .onFailure { err ->
            // err is a LineEditorError
            println(err.message)
            break

        }
        .onSuccess { line ->
            // We can also add the line to the history
            // automatically by setting autoAddHistory = true in the config.
            editor.addHistoryEntry(line)
            println(line)
        }
}

// Save the history to disk.
editor.saveHistory(history)