This document discusses Swift and its future on iOS. It covers key features of Swift like being modern, easy, safe and small. It also discusses using Swift Playgrounds, differences between Swift and Objective-C syntax, dependency management with CocoaPods, unit testing with XCTest and Quick/Nimble, and setting up continuous integration with Xcode server or Jenkins.

1. Swift and the future of
iOS
Chiara Chiappini
@chiarachiappini
google.com/+chiarachiappini

2. 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

3. Useful reading
Swift language guide
raywenderlich.com
NSHipster.com
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4. 4 key features of Swift
Modern
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5. 4 key features of Swift
Modern
Easy
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6. 4 key features of Swift
Modern
Easy
Safe
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7. 4 key features of Swift
Modern
Easy
Safe
Small
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8. Who is using Swift?
SlideShare
American Airlines
Duolingo
do you know more?
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9. Swift Playground
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10. Swift and Objective-C
Swift let name ="Chiara"
print("Hello (name)")
Objective-C NSString*str =@"Hello Chiara";
NSLog(@"%@", str)
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11. Xcode vs Appcode
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12. Dependency management
Cocoapods vs Maven vs Gradle
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13. sudo gem install cocoapods
pod init
edit PodFile (similar to editing pom.xml)
pod install
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14. 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

15. Protocol vs Interface
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16. protocol Sweet {
var sugarQuantity: Int { get }
}
class BlackChocolate: Sweet {
var sugarQuantity: Int = 10
}
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17. Unit Tests
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18. XCTest vs JUnit
testing framework integrated with XCode
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19. XCTest example
class 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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20. Use @testable
import 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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21. Quick and Nimble
Quick:behaviour driven testing framework
Nimble: fluent assertions
https://github.com/Quick/Nimble
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22. Nimble
func testNumbersWithNimble() {
expect(1+1).to(equal(2))
expect([1,2,3]).to(allPass(beLessThan(4)))
}
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23. func testStringWithNimble() {
let myString = "Hello!"
expect(myString).to(equal("Hello!"))
expect(myString)==("Hello!")
expect(myString).to(beginWith("Hel"))
}
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24. Quick
class 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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25. Testing and CI
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26. Continuous Integration
early feedback
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27. Continuous Integration
early feedback
team peace of mind and alerting
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28. Continuous Integration
early feedback
team peace of mind and alerting
standardized build
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29. Continuous Integration
early feedback
team peace of mind and alerting
standardized build
record of results
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30. Continuous Integration
early feedback
team peace of mind and alerting
standardized build
record of results
support release process
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31. Continuous Integration
early feedback
team peace of mind and alerting
standardized build
record of results
support release process
first step to continuous deployment
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32. CI for mobile
maturity
emulators and real devices
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33. CI for iOS
Xcode server
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34. CI for iOS
Xcode server
Jenkins
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35. CI for iOS
Xcode server
Jenkins
...
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36. Xcode service and bots
Xcode service integrated in Xcode
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37. Xcode service and bots
Xcode service integrated in Xcode
manage bots from Xcode
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38. Jenkins
Xcode plugin or Xcode tool
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39. Jenkins Jobs
build and unit test the app
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40. Jenkins Jobs
build and unit test the app
run functional tests
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41. Jenkins Jobs
build and unit test the app
run acceptance tests
build application archive (ipa)
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42. Jenkins Jobs
build and unit test the app
run acceptance tests
build application archive (ipa)
tag and archive the ipa
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43. Jenkins Jobs
build and unit test the app
run acceptance tests
build application archive (ipa)
tag and archive the ipa
send to TestFlight
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44. What we learnt
What is Swift

45. What we learnt
What is Swift
How to practice

46. What we learnt
What is Swift
How to practice
Some Java-Swift language equivalences

47. What we learnt
What is Swift
How to practice
Some Java-Swift language equivalences
Tools

48. What we learnt
What is Swift
How to practice
Some Java-Swift language equivalences
Tools
Testing and CI

49. Go for Swift!