Hamamatsu.swift is a local Swift user group in Hamamatsu, Japan. It was started in February 2016 and holds regular meetups to discuss Swift topics. Their upcoming meetup on July 30th will cover various Swift 3.0 changes and is open to all interested Swift developers.

1. Hamamatsu.swift
@ IT

2. Takuya
• iOS Android (PHP
• Swift 1 ( 2015/5/18)
•
• Android
•
• Hamamatsu.swift
@Licht_x

3. Hamamatsu.swift
• OSC Hamanako 2016
(2016 1 23 ( ))
• Hamamatsu.swift #1 2016/02/27( )
• 1 4
•
• 5

5. Swift

6. Swift
• Swift iOS OS X
WWDC 2014 OS
Objective-C
Objective-C++ C
• Swift Xcode Playgrounds
• LLVM

7. Swift is Open Source

8. Swift is Open Source
• WWDC 2015
• Apache Licence 2.0 GitHub
(https://github.com/apple/swift)
• 2010 7 18
LLVM Chris Lattner

9. First Commit is 2010/7/18
• Github Initial commit

10. OpenSource

11. •
•
•
• Foundation
• libdispatch
• XCTest
• Package Manager
• LLDB Swift
• SourceKit(
)

12. Linux Support
• Ubuntu 15.10,14.04
• https://swift.org/download/
• swiftdocker/docker-swift
https://github.com/swiftdocker/docker-swift

13. Swift for Windows
(cygwin, msvc, mingw)
• Windows
• Swift for Windows https://github.com/
tinysun212/swift-windows)

14. Swift on Android
• Swift Android
swift/Android.md https://github.com/apple/swift/
blob/master/docs/Android.md
• Android

15. Web Framework
• Web Framework
Swift
• Rails Express
Framework

16. Web Framework
Perfect [http://perfect.org/]
Kitura - IBM[https://github.com/ibm-swift/kitura]
Swifton [https://github.com/necolt/Swifton]
Express [https://github.com/crossroadlabs/Express]
vapor [https://github.com/qutheory/vapor]
blackfish [https://github.com/elliottminns/blackfish]
Slimane [https://github.com/noppoMan/Slimane]

17. Objective-C → Swift
• ObjC→Swift
http://techblog.yahoo.co.jp/ios/objc2swift/
• Xcode
Swift ObjC
ObjC Swift

18. Command Line Tool
http://techlife.cookpad.com/entry/
2015/11/09/150248

19. Swift

20. Hello World
• print(”Hello World!”)
• WWDC2016

21. Variable
• let : =
• var : =
• let pi: Double = 3.141592
• let pi = 3.141592 //

22. for loop
var numbers = [100, 200, 300]
var sum = 0
for var i = 0; i < numbers.count; i++ {
sum += numbers[i]
}
//Swift3 Swift2.2 Deprecated
for i in 0..<numbers.count {
sum += numbers[i]
}
for number in numbers {
sum += number
}

23. Switch
switch num {
case 0:
message = "case 0"
case 1, 2, 3:
message = "case 1 or 2 or 3"
default:
break
}

24. Cast
var object : Any = "message"
var message = object as String
Java
Object object = "message";
String message = (String) object;

25. Method
func countUp(number : Int) -> Int
{
return number + 1
}
var result = countUp(1)
print(result)
// => 2

26. Extends
class NamedShape: Shape {
var name: String = ""
override func description() -> String {
return “ (name)" + super.description()
}
}

27. Optional
•
nil
•
nil
• ?
!

28. Declaration
•
var hoge: String?
•
var fuga: String

29. Print
var hoge: String?
print(hoge)
# => nil
var fuga: String
print(fuga)
# =>

30. Optional()
var hoge: String? = "Hello World"
print(hoge)
# => Optional("Hello World”)
var fuga: String = "Hello World"
print(fuga)
# => Hello World

31. UnWrap
• Optional ( )
• Forced Unwrapping ( )
• Optional Binding ( )
• Optional Chaining ( )

32. Forced Unwrapping
var optional: Int? = 10
print(optional)
// => Optional(10)
print(optional!)
// => 10

33. Optional Binding
var hobby: String?
if let hobby = hobby {
print(hobby)
}else {
print("no hobby")
}

34. Optional Chaining
var human: Human? = Human()
human?.name
human?.hello()
nil
nil nil

35. guard
var human: Human? = Human()
guard let human = human else {
return
}
human.hello()//unwrap

36. Extension
extension String {
var isHiragana: Bool {
return unicodeScalars.reduce(!
isEmpty) { (result, unicode) -> Bool in
return result && 0x3040 <=
unicode.value && unicode.value < 0x30A0
}
}
}
“ ”.isHiragana
//true

37. Swift 3.0

38. Remove the ++ and --
operators
let a = ++x
let b = x++
let c = --x
let d = x--
// Before:
x++
// After:
x += 1

39. Remove C-style for-loops with
conditions and incrementers
// Before:
for var i = 0 ; i < 10 ; i++ {
}
// After:
for i in 0..<10 {
}
// Before:
for var i = 0 ; i <= 10 ; i++ {
}
// After:
for i in 0...<10 {
}

40. Swift

41. Swift

42. Hamamatsu.swift

43. Hamamatsu.swift
• Swift
• iOS
• Swift
•
• OSC @Licht_x

44. 7/30( )
• Hamamatsu.swift #5
• 13:00 ~ 17:00
•
• http://hamamatsu-swift.connpass.com/
event/33834/