Adapter.kt

class Adapter<T : BaseModel>(val items: List<T>, val callback : (GenericVH, T)-> Unit) : RecyclerView.Adapter<Adapter.GenericVH>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): GenericVH {
        return GenericVH(DataBindingUtil.inflate(LayoutInflater.from(parent.context), viewType, parent, false))
    }

    override fun getItemCount() = items.size

    override fun getItemViewType(position: Int) = items[position].resId

    override fun onBindViewHolder(holder: GenericVH, position: Int) = callback.invoke(holder, items[position])

    class GenericVH(val binding : ViewDataBinding): RecyclerView.ViewHolder(binding.root)
}