RecyclerDiffUtil.kt

package com.tos.science_master.utils

/**
 *Created by tarikul on 29/5/21
 */

import androidx.recyclerview.widget.DiffUtil

class RecyclerDiffUtil<T>(
        private val oldList: List<T>,
        private val newList: List<T>
) : DiffUtil.Callback() {
    override fun getOldListSize(): Int {
        return oldList.size
    }

    override fun getNewListSize(): Int {
        return newList.size
    }

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

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