Kotlin数据类复制方法不深入复制所有成员

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fun test() {
    val bar = Bar(0)
    val foo = Foo(5, bar, mutableListOf(1, 2, 3))
    println("foo    : $foo")
    val barCopy = bar.copy()
    val fooCopy = foo.copy()
    foo.a = 10
    bar.x = 2
    foo.list.add(4)
    println("foo    : $foo")
    println("fooCopy: $fooCopy")
    println("barCopy: $barCopy")
data class Foo(var a: Int,
               val bar: Bar,
               val list: MutableList<Int> = mutableListOf())
data class Bar(var x: Int = 0)

val fooCopy = foo.copy(bar = foo.bar.copy(), list = foo.list.toMutableList())

data class User(val name: String = "", val age: Int = 0)

fun copy(name: String = this.name, age: Int = this.age) = User(name, age)

fun copy(a: Int = this.a, bar: Bar = this.bar, list: MutableList<Int> = this.list) = Foo(a, bar, list)
fun copy(x: Int = this.x) = Bar(x)

fun copy(a: Int = this.a, bar: Bar = this.bar, list: MutableList<Int> = this.list)

fun copy(a: Int = this.a, bar: Bar = this.bar.copy(), list: MutableList<Int> = this.list.toList()) = Foo(a, bar, list)

import java.io.Serializable
import java.io.ByteArrayOutputStream
import java.io.ByteArrayInputStream
import java.io.ObjectOutputStream
import java.io.ObjectInputStream
fun <T : Serializable> deepCopy(obj: T?): T? {
    if (obj == null) return null
    val baos = ByteArrayOutputStream()
    val oos  = ObjectOutputStream(baos)
    oos.writeObject(obj)
    oos.close()
    val bais = ByteArrayInputStream(baos.toByteArray())
    val ois  = ObjectInputStream(bais)
    @Suppress("unchecked_cast")
    return ois.readObject() as T
}

import kotlinx.serialization.Serializable
import kotlinx.serialization.cbor.Cbor
@Serializable
data class DataClass(val yourData: Whatever, val yourList: List<Stuff>) {
    var moreStuff: Map<String, String> = mapOf()
    fun copy(): DataClass {
        return Cbor.load(serializer(), Cbor.dump(serializer(), this))
    }

class Foo {
    fun deepCopy() : Foo {
        return Gson().fromJson(Gson().toJson(this), this.javaClass)
}

fun DataType.deepCopy() : DataType {
    val copy = DataType()
    for (m in this::class.members) {
        if (m is KProperty && m is KMutableProperty) {
            m.setter.call(copy, if (m.returnType::class.isData) {
                (m.getter.call(this) to m.returnType).copy()
            } else m.setter.call(copy, m.getter.call(this)))
    return copy
}

@Parcelize
data class Flights(
// data with different types including the list 
) : Parcelable

// deserialize method
fun flightListToString(list: ArrayList<Flights>): String {
    val type = object : TypeToken<ArrayList<Flights>>() {}.type
    return Gson().toJson(list, type)
// serialize method
fun toFlightList(string: String): List<Flights>? {
    val itemType = object : TypeToken<ArrayList<Flights>>() {}.type
    return Gson().fromJson<ArrayList<Flights>>(string, itemType)
}

   // here I assign list from Navigation args
    private lateinit var originalFlightList: List<Flights>
    val temporaryList = ArrayList(makeProposalFragmentArgs.selectedFlightList.asList())    
    originalFlightList = toFlightList(flightListToString(temporaryList))!!

bindingView.imageViewReset.setOnClickListener {
        val temporaryList = ArrayList(makeProposalFragmentArgs.selectedFlightList.asList())
        val flightList = toFlightList(flightListToString(temporaryList))!!
        **adapter**.resetListToOriginal(flightList)
    }

private val objectMapper = ObjectMapper()
.registerModule(KotlinModule())
.registerModule(JavaTimeModule())
fun <T> Any.copyDeep(): T {
        return objectMapper.readValue(objectMapper.writeValueAsString(this), this.javaClass) as T

Kotlin数据类复制方法不深入复制所有成员

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