WeRockStar

Setting up iOS Universal Links

Table of Contents

• Resources
  • General link resources
  • Validation tools
• Server configuration
  • Apple JSON Metadata file
• Create a JSON file called apple-app-association

WeRockStar

import sun.security.x509.*
import java.io.File
import java.math.BigInteger
import java.security.*
import java.security.cert.X509Certificate
import java.util.*

/**
 * Simple script for generating keys and certificates as needed to connect to the ING API.

WeRockStar

// 1 - provider creation
let provider = MoyaProvider<MyRouter>(
    manager: AlamofireSessionManagerBuilder().build()
)

// 2 - session manager builder
class AlamofireSessionManagerBuilder {
    
    var policies: [String: ServerTrustPolicy]?
    var configuration = URLSessionConfiguration.default

WeRockStar

protocol State {}

struct Transition<From: State, To: State> {
    let transition: () -> To
}

struct Machine<CurrentState: State> {
    
    var state: CurrentState
    

WeRockStar

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

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Async/Await for Swift

• Proposal: SE-XXXX
• Authors: Chris Lattner, Joe Groff

Introduction

Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

WeRockStar

struct ComposeTransformer<T, R> {
    let transformer: (Observable<T>) -> Observable<R>
    init(transformer: @escaping (Observable<T>) -> Observable<R>) {
        self.transformer = transformer
    }
    
    func call(_ observable: Observable<T>) -> Observable<R> {
        return transformer(observable)
    }
}

WeRockStar

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

WeRockStar

openssl

Install

Install the OpenSSL on Debian based systems

sudo apt-get install openssl

WeRockStar

@RunWith(AndroidJUnit4::class)
class MainViewTests {
  val mockUserAction = mock(MainContract.UserAction::class.java)

  @get:Rule
  val activityTestRule = object : ActivityTestRule<MainActivity>(MainActivity::class.java, true, true) {
    override fun beforeActivityLaunched() {
      super.beforeActivityLaunched()
      val myApp = InstrumentationRegistry.getTargetContext().applicationContext as MyApp
      myApp.dispatchingActivityInjector = createFakeActivityInjector<MainActivity> {