Code of TaPL Chapter 4 written in Swift.

We create APNs client in Part 1 and it can only do sending fixed parameter. This article describes how to create server that accept arbitrary parameters and send formatted request to APNs. Full code is here.

Sending push notification to iOS device is easy and simple using to APNs Provider API. We can create golang notification client which is only needed dozens of lines and it can send notification as a test.

Changing shape of UIButton to triangle is need to use UIBezierPath not frame. UIBezierPath can draw a figure with concat some points. By Configuring three points and connect it, we can writing triangle. Sample code is here. Sample code class TriangleButton: UIButton { private let bezierPath = UIBezierPath() override init(frame: CGRect) { super.init(frame: frame) setup() } required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) setup() } private func setup() { bezierPath.move(to: CGPoint(x: bounds.

We need to create multi section tableview quite often. Using Enum make it easier.

implementation of Digest Authentication with APIKit.

Easy way to get state of webiew loading using RxSwift.

Dagger is the tool that enable to dependency injection in Java. It works to create testable and modulable application. introducing it in Kotlin is not difficult.

We can change the API Host depending on develop and release environment using bundle.

Swift4 introduces Codable protocol which makes too simplify to encode and decode to JSON.

Functional data structure is slightly different from object oriented one. It have persistence and not mutated. I implement this data structure in Swift which have characteristic both object oriented and functional programming. The first example is list.