devxoul

import Foundation

let queue = DispatchQueue(label: "test")
var threads: [Thread] = []

for _ in 0..<100 {
  queue.async {
    threads.append(Thread.current)
    // 1) if this line is not commented out
    // 2) if this line is commented out

devxoul

weak var weakViewController: UIViewController?

_ = {
  let viewController = UIViewController()
  viewController.loadViewIfNeeded() // this line prevents from deallocation
  weakViewController = viewController
}()

XCTAssertNil(weakViewController) // (fail) weakViewController = Optional(<UIViewController: 0x7fd55e705080>)

devxoul

import Quick
import RxSwift

final class MySpec: QuickSpec {
  override func spec() {
    verifyRxResourcesAreReleased()

    it("fails") {
      _ = Observable<Int>.interval(.seconds(1), scheduler: MainScheduler.instance).subscribe()
    }

devxoul

class GradientMaskLineRenderer: LineChartRenderer {
  override init(dataProvider: LineChartDataProvider, animator: Animator, viewPortHandler: ViewPortHandler) {
    super.init(dataProvider: dataProvider, animator: animator, viewPortHandler: viewPortHandler)
  }

  override func drawFilledPath(context: CGContext, path: CGPath, fill: Fill, fillAlpha: CGFloat) {
    let rect = viewPortHandler.contentRect

    let colorSpace = CGColorSpaceCreateDeviceGray()
    let bitmapContext = CGContext(

devxoul

class Cell {
  private let viewBlock: () -> Void

  init(viewBlock: @escaping () -> Void) {
    self.viewBlock = viewBlock
  }

  deinit {
    print(type(of: self), #function)
  }

devxoul

배경

• APP-

작업 내용

테스트 방법

리뷰 노트

devxoul

//
//  Date+ISO8601.swift
//  SSFoundation
//
//  Created by Suyeol Jeon on 19/09/2019.
//  Copyright © 2019 StyleShare Inc. All rights reserved.
//

import Foundation

devxoul

class User: Hashable {
  let name: String
  let age: Int

  init(name: String, age: Int) {
    self.name = name
    self.age = age
  }

  func hash(into hasher: inout Hasher) {

devxoul

playgroundShouldContinueIndefinitely()

class Reactor {
  lazy var state: Observable<Int> = self.closure().concat(Observable<Int>.never())
  private lazy var closure: () -> Observable<Int> = self.closureImplementation()

  deinit {
    print("DEINIT SUCCESS!!!")
  }

devxoul

////////////////////////////////////////////////////////////////////////////////
// Usage                                                                      //
////////////////////////////////////////////////////////////////////////////////

struct JoinForm {
  var emailField: FormField
  var usernameField: FormField
  
  init(email: String?) {
    self.emailField = FormField(value: email)