class RecyclerViewAdapter: ListAdapter<List<String>, RecyclerViewAdapter.ViewHolder>(RecyclerViewDiffCallback()) {

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val item = getItem(position)
        holder.bind(item)
    }



    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        return ViewHolder.from(parent)
    }

    class ViewHolder private constructor(private val binding: ListItemBinding): RecyclerView.ViewHolder(binding.root) {

        fun bind(item: List<String>) {
            binding.amount.text = String.format("%.6f", item[1].toFloat())
            binding.price.text = String.format("%.2f", item[0].toFloat())
            binding.total.text = String.format("%.5f", (item[0].toFloat() * item[1].toFloat()))
        }

        companion object {
            fun from(parent: ViewGroup): ViewHolder {
                val layoutInflater = LayoutInflater.from(parent.context)
                val binding = ListItemBinding.inflate(layoutInflater, parent, false)
                return ViewHolder(binding)
            }
        }
    }
}

class RecyclerViewDiffCallback: DiffUtil.ItemCallback<List<String>>() {
    override fun areItemsTheSame(oldItem: List<String>, newItem: List<String>): Boolean {
        return true
    }

    override fun areContentsTheSame(oldItem: List<String>, newItem: List<String>): Boolean {
        return false
    }

}