Data classes in kotlin are classes created to do nothing but hold data. Such classes are marked as data
:
data class User(var firstname: String, var lastname: String, var age: Int)
The code above creates a User
class with the following automatically generated:
val
s)equals()
hashcode()
toString()
copy()
componentN()
(where N
is the corresponding property in order of declaration)Just as with a function, default values can also be specified:
data class User(var firstname: String = "Joe", var lastname: String = "Bloggs", var age: Int = 20)
More details can be found here Data Classes.