BindableRecyclerView for Kotlin

BindableRecyclerView.kt

abstract class BindableAdapter<TYPE : MultiType>(private val list: MutableList<TYPE>) : RecyclerView.Adapter<BindableViewHolder<TYPE>>() {
  override fun onBindViewHolder(
    holder: BindableViewHolder<TYPE>,
    position: Int
  ) = holder.bind(list[position])

  override fun getItemViewType(position: Int): Int = list[position].type

  override fun getItemCount(): Int = list.size
}

abstract class BindableViewHolder<TYPE>(itemView: View) : RecyclerView.ViewHolder(itemView) {
  abstract fun bind(element: TYPE)
}

MultiType.kt

interface MultiType {
  val type: Int
}