dilipiOSDeveloper

import UIKit   

    struct RequestType {
      static let  POST = "POST"
      static let  GET = "GET"
    }

    enum HtttpType: String {
      case POST = "POST"
      case GET  = "GET"

dilipiOSDeveloper

First of all rather than multiple arrays use a struct for the data source.

And don't use extra arrays or dictionaries to maintain the selection either, this is error-prone and unnecessarily expensive.

Add a boolean member to the struct for the selected state.

struct Course : Codable {
    let name : String
    let image : String
    var isSelected : Bool

dilipiOSDeveloper

let arrayOfTuples = [(0, 1), (0, 1), (0, 1), (0, 1), (0, 1), (0, 1), (0, 1), (0, 1), (0, 1), (0, 1)]
let flattenedArray = arrayOfTuples.flatMap{ [$0.0, $0.1] }
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https://johncodeos.com/how-to-add-uicollectionview-inside-uitableviewcell-using-swift/

https://github.com/johncodeos-blog

dilipiOSDeveloper

import Foundation

public extension UICollectionView {
    /**
     Register nibs faster by passing the type - if for some reason the `identifier` is different then it can be passed
     - Parameter type: UICollectionView.Type
     - Parameter identifier: String?
     */
    func registerCell(type: UICollectionViewCell.Type, identifier: String? = nil) {
        let cellId = String(describing: type)