Each data class object has a component for each property like component1, component2, etc.. I was wondering if there is any way in Kotlin to iterate over each component of a class. Say I have class:
data class User(age:Int, name:String)
Could I do something like:
for(component in aUserObject){
//do some stuff with age or name
}
?
First of all, the componentN properties are available only on data classes, not on every object.
没有专门用于迭代组件的API，但您可以使用Kotlin reflection来迭代任何类的属性:
class User(val age: Int, val name: String)
fun main(args: Array<String>) {
val user = User(25, "Bob")
for (prop in User::class.memberProperties) {
println("${prop.name} = ${prop.get(user)}")
}
}