is this creating two vals?

# announcements

[Jrichards1408]

is this creating two vals?

[Tim VanFosson]

https://kotlinlang.org/docs/reference/multi-declarations.html

[Jrichards1408]

val (name, age) = person

the above does not make sense.?

It states that it is converted to:

val name = person.component1()
val age = person.component2()

[Jrichards1408]

what is component1() ?

[Animesh Sahu]

Yes, components are automatically declared inside of data classes for each variable, and for list there are 5 predefined.

[Animesh Sahu]

You can also define more for lists yourself, they're just static extensions:

fun <T> List<T>.component6() = get(5)  // or this[5]

[Jrichards1408]

ahh ok so if i have a Person data class like this:

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

Component1() = name of type string and component2() = age of type Int?

[Animesh Sahu]

Yes, not Int? but Int .

[Jrichards1408]

o sorry that ? was a valid question mark related to the whole setnance

[Jrichards1408]

sentance*

[Tim VanFosson]

see the automatically derived functions for a data class in the docs https://kotlinlang.org/docs/reference/data-classes.html

[Tim VanFosson]

`componentN()` functions corresponding to the properties in their order of declaration;

[Animesh Sahu]

The syntax is called destructing declaration by the way if you are wondering

[Jrichards1408]

Brilliant thanks