Remove row from table view - ios

Question

How can I remove row from tableview cell I cant remove the cell from table view I don't know why and when I try to delete never gone from table view please someone tell me how I can delete it one cell from multiple cell I have it. I know I should have var but I did not put it for example var = something
class addCartTblVC: UITableViewController {
//MARK: -Variables
var coreDataVariables = GetCoreDataVariables()
//MARK: -ViewMethords
override func viewDidLoad() {
super.viewDidLoad()
self.fetchCart()
let backItem = UIBarButtonItem()
backItem.title = "Back"
navigationItem.backBarButtonItem = backItem
tableView.tableFooterView = UIView()
}
//MARK: -tableView dataSource
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return coreDataVariables.result_add_Cart.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cartCell = tableView.dequeueReusableCell(withIdentifier: "cartCell", for: indexPath) as! AddCartTblCell
let img = coreDataVariables.result_add_Cart[indexPath.row].product_Image!
let userPhotoString = img
let imageUrl:URL = URL(string: userPhotoString)!
let imageData:Data = try! Data(contentsOf: imageUrl)
// Add photo to a cell as a subview
if let image = UIImage(data: imageData){
cartCell.pro_Img.image = image
}
cartCell.pro_MRP.text = coreDataVariables.result_add_Cart[indexPath.row].product_Price
cartCell.pro_Details.text = coreDataVariables.result_add_Cart[indexPath.row].product_Name
cartCell.pro_Discount.text = coreDataVariables.result_add_Cart[indexPath.row].product_Discount
if cartCell.pro_Discount.text! == cartCell.pro_MRP.text!{
cartCell.pro_Discount.isHidden = true
cartCell.crossView.isHidden = true
}
else{
cartCell.pro_MRP.textColor = UIColor.darkGray
cartCell.pro_Discount.isHidden = false
cartCell.crossView.isHidden = false
}
cartCell.proceedBtn.tag = indexPath.row
cartCell.proceedBtn.addTarget(self, action: #selector(addCartTblVC.ProceedTapped(_:)), for: .touchUpInside)
cartCell.removeFromCoreDataBtn.tag = indexPath.row
cartCell.removeFromCoreDataBtn.addTarget(self, action: #selector(addCartTblVC.deleteFromCart(_:)), for: .touchUpInside)
return cartCell
}
//MARK: -fetchFunction
func fetchCart(){
let cart = Add_Cart()
coreDataVariables.result_add_Cart = cart.fetchCart()!
}
//MARK: -Proceed Action
#IBAction func back(_ sender: UIBarButtonItem) {
dismiss(animated: false, completion: nil)
}

Answer 1

Before loading table data try to loop on coreDataVariables.result_add_Cart and check for duplicate elements and try to make them single element by multiplying product_Price * n of duplicates and take care of product_Discount also.
your approach should be like this ((this method only for removing duplicates)) :
extension Array where Element: Equatable {
mutating func removeDuplicates() {
var result = [Element]()
for value in self {
if !result.contains(value) {
result.append(value)
}
}
self = result
}
==> Hope not getting negative vote for this answer :D