Chiara Chiappini - Swift and the future of iOS app development

Swift and the future of iOS

Chiara Chiappini @chiarachiappini

google.com/+chiarachiappini

Swift

@chiarachiappini

Jun 2014

June 2015

Some point this

year?

Swift announced at WWDC 2014

Swift 2 announced at WWDC 2015

Swift will be open source

Useful reading

Swift language guideraywenderlich.com

NSHipster.com

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4 key features of Swift

Modern

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4 key features of Swift

ModernEasy

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4 key features of Swift

ModernEasySafe

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4 key features of Swift

ModernEasySafeSmall

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Who is using Swift?

SlideShareAmerican Airlines

Duolingodo you know more?

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Swift Playground

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Swift and Objective-C Swift let name ="Chiara"

print("Hello \(name)")

Objective-C NSString*str =@"Hello Chiara";

NSLog(@"%@", str)

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Xcode vs Appcode

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Dependency managementCocoapods vs Maven vs Gradle

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sudo gem install cocoapodspod init

edit PodFile (similar to editing pom.xml)pod install

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platform :ios, '8.0'use_frameworks!

target 'SwiftTalk' do pod 'Alamofire', '~> 3.1'end

target 'SwiftTalkTests' do pod 'Quick', '~> 0.6.0' pod 'Nimble', '2.0.0-rc.3'end

Protocol vs Interface

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protocol Sweet { var sugarQuantity: Int { get }}

class BlackChocolate: Sweet { var sugarQuantity: Int = 10}

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Unit Tests

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XCTest vs JUnit

testing framework integrated with XCode

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XCTest exampleclass MyTestsXCTests: XCTestCase{ let myNumbers = [1,2,3] func testNumbersWithXCTest() { XCTAssertEqual(1 + 1, 2, "expected one plus one to equal two") for number in myNumbers{ XCTAssertLessThan(number, 4) } }}

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Use @testableimport XCTest@testable import CodemotionExamples

class CodemotionExamplesTests: XCTestCase { func testBlackChocolateHasSugar() { let blackChocolate = BlackChocolate() XCTAssertEqual(blackChocolate.sugarQuantity, 10, "Expected sugar quantity is 10") } }

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Quick and Nimble

Quick:behaviour driven testing frameworkNimble: fluent assertions

https://github.com/Quick/Nimble

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Nimble

func testNumbersWithNimble() { expect(1+1).to(equal(2)) expect([1,2,3]).to(allPass(beLessThan(4))) }

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func testStringWithNimble() { let myString = "Hello!" expect(myString).to(equal("Hello!"))

expect(myString)==("Hello!") expect(myString).to(beginWith("Hel")) }

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Quickclass MyTestsQuick: QuickSpec { override func spec() { describe("Testing numbers") { context("when adding 1 and 2"){ it("results as 3") { expect(1+2).to(equal(3)) } } }

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Testing and CI

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Continuous Integration

early feedback

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Continuous Integration

early feedbackteam peace of mind and alerting

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Continuous Integration

early feedbackteam peace of mind and alerting

standardized build

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Continuous Integration

early feedbackteam peace of mind and alerting

standardized buildrecord of results

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Continuous Integration

early feedbackteam peace of mind and alerting

standardized buildrecord of results

support release process

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Continuous Integration

early feedbackteam peace of mind and alerting

standardized buildrecord of results

support release processfirst step to continuous deployment

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CI for mobile

maturityemulators and real devices

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CI for iOS

Xcode server

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CI for iOS

Xcode serverJenkins

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CI for iOS

Xcode serverJenkins

...

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Xcode service and bots

Xcode service integrated in Xcode

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Xcode service and bots

Xcode service integrated in Xcodemanage bots from Xcode

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Jenkins

Xcode plugin or Xcode tool

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Jenkins Jobs

build and unit test the app

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Jenkins Jobs

build and unit test the apprun functional tests

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Jenkins Jobs

build and unit test the apprun acceptance tests

build application archive (ipa)

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Jenkins Jobs

build and unit test the apprun acceptance tests

build application archive (ipa)tag and archive the ipa

@chiarachiappini

Jenkins Jobs

build and unit test the apprun acceptance tests

build application archive (ipa)tag and archive the ipa

send to TestFlight@chiarachiappini

What we learntWhat is Swift

What we learntWhat is Swift

How to practice

What we learntWhat is Swift

How to practice Some Java-Swift language equivalences

What we learntWhat is Swift

How to practice Some Java-Swift language equivalences

Tools

What we learntWhat is Swift

How to practice Some Java-Swift language equivalences

ToolsTesting and CI

Go for Swift!