RinniSwift

// 1.
class CircularBuffer<T> {
    
    var bufferMaxSize: Int
    var size = 0
    // 2.
    var elements = Array<T?>(repeating: nil, count: 8)

    // 3.
    init(maxSize: Int) {

RinniSwift

let array = ["Hello", "people", "of", "the", "world"]

// looping using count property
for ind in 0..<array.count {
  print(ind)
}
// 0, 1, 2, 3, 4

// looping using the endIndex property
for ind in 0..<array.endIndex {

RinniSwift

// 1. empty array initialization
let numbers = [Int]()
let nums: [Int] = []
let newNumbers = Array<Int>()
let newNums: Array<Int> = Array()

// 2. preinitializing a fixed number of default values
let repeatSwift = Array<String>(repeating: "Swift", count: 5) // ["Swift", "Swift", "Swift", "Swift", "Swift"]
// or
let repeatSwift = Array(repeating: "Swift", count: 5)  // ["Swift", "Swift", "Swift", "Swift", "Swift"]

RinniSwift

ServiceLayer.request(router: Router.getProductInfo) { (result: Result<[String : [CollectionItem]], Error>) in
    switch result {
    case .success:
        print(result)
    case .failure:
        print(result)
    }
}

RinniSwift

struct CollectionInfo: Codable {
    let title: String
    let productType: String
    let variants: [VariantsInfo]
    let image: ImageInfo
    
    enum CodingKeys: String, CodingKey {
        case title
        case productType = "product_type"
        case variants

RinniSwift

struct CollectionItemId: Codable {
    let productId: Int
  
    enum CodingKeys: String, CodingKey {
        case productId = "product_id"
    }
}

RinniSwift

struct CollectionItem: Codable {
    let title: String
    let id: Int
}

RinniSwift

What will I refactor?

old code base line 40 to 110

• The action sign in button.
  • to reduce amount of lines in code.
  • to reduce redundent code.

How will I refactor it?

• create helper functions for independant tasks, and to reduce redundent code.
• refactor the networking layer to push tasks into the background thread instead of pushing it to the background thread everytime I call the object.\

RinniSwift

class ServiceLayer {
    // 1.
    class func request<T: Codable>(router: Router, completion: @escaping (Result<[String: [T]], Error>) -> ()) {
        // 2.
        var components = URLComponents()
        components.scheme = router.scheme
        components.host = router.host
        components.path = router.path
        components.queryItems = router.parameters
        // 3.

RinniSwift

enum Router {
  // ...
  
  // 7.
  var method: String {
    switch self {
      case .getSources, .getProductIds, .getProductInfo:
        return "GET"
    }
  }