Some helper methods for RecyclerView's `DiffUtil`s

DiffUtilKtx.kt

import androidx.recyclerview.widget.DiffUtil
import kotlin.reflect.KProperty1

@Suppress("NOTHING_TO_INLINE")
inline fun <T : Any, R: Any> byProperty(kProperty: KProperty1<T, R>): (T, T) -> Boolean =
    { old, new -> kProperty.get(old) == kProperty.get(new) }

@Suppress("FunctionName")
inline fun <T : Any> DiffItemCallback(
    crossinline areItemsTheSame: (T, T) -> Boolean,
    crossinline areContentsTheSame: (T, T) -> Boolean = { old, new -> old == new }
) = object : DiffUtil.ItemCallback<T>() {
    override fun areItemsTheSame(oldItem: T, newItem: T) = areItemsTheSame(oldItem, newItem)
    override fun areContentsTheSame(oldItem: T, newItem: T) = areContentsTheSame(oldItem, newItem)
}