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@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.RUNTIME)
annotation class LayoutResourceId(
        val value: Int
)
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abstract class BaseViewHolder<T>(view: View) : RecyclerView.ViewHolder(view) {

    abstract fun bind(item: T, vararg listeners: ((T) -> Unit))

}
========================================================================
class BaseDiffUtilCallback<T>(
        private val oldList: List<T>,
        private val newList: List<T>)
    : DiffUtil.Callback() {

    override fun getOldListSize(): Int = oldList.size

    override fun getNewListSize(): Int = newList.size

    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int):
            Boolean = oldList[oldItemPosition] == newList[newItemPosition]

    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int):
            Boolean = oldList[oldItemPosition] == newList[newItemPosition]

}
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abstract class BaseAdapter<D, T : BaseViewHolder<D>> : RecyclerView.Adapter<T>() {

    private var dataList = emptyList<D>()
    private var itemClickListener: ((D) -> Unit) = {}

    fun setClickListener(listener: (D) -> Unit) {
        itemClickListener = listener
    }

    fun updateData(dataList: List<D>) {
        val diffUtilCallback = BaseDiffUtilCallback(this.dataList, dataList)
        val diffUtilResult = DiffUtil.calculateDiff(diffUtilCallback,true)
        this.dataList = dataList
        diffUtilResult.dispatchUpdatesTo(this)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): T {
        val layoutResourceId = javaClass.getAnnotation(LayoutResourceId::class.java)
        val view = LayoutInflater.from(parent.context).inflate(layoutResourceId.value, parent, false)
        return onViewInflated(view)
    }

    abstract fun onViewInflated(view: View): T

    override fun onBindViewHolder(viewHolder: T, position: Int) {
        viewHolder.bind(dataList[position], itemClickListener)
    }

    override fun getItemCount(): Int = dataList.size

}
========================================================================
//example

@LayoutResourceId(R.layout.repo_item)
class RepoAdapter : BaseAdapter<RepoModel, RepoAdapter.RepoViewHolder>() {

    override fun onViewInflated(view: View): RepoViewHolder = RepoViewHolder(view)

    inner class RepoViewHolder(view: View) : BaseViewHolder<RepoModel>(view) {

        override fun bind(item: RepoModel, vararg listeners: (RepoModel) -> Unit) {
            itemView.tvListName.text = item.name
            if (listeners.isNotEmpty()) {
                itemView.setOnClickListener {
                    listeners[0].invoke(item)
                }
            }
        }
    }
}