A Gentle Introduction to Swift Using Playgrounds

MobileTea Meetup - Boston, February 2016

Transcript

1. A Gentle Introduction to Swift Using Playgrounds Ron Mourant Mobile Tea - Boston February 4, 2016 https://medium.com/@ronm333 http://opensourceswift.co Twitter: @ronm333 1
2. Topics ➤ Swift is different ➤ Fundamental Data Types in Swift ➤ Playgrounds in Xcode ➤ Type Inference ➤ Swift likes constants (let) ➤ Swift Arrays (collection type) ➤ Swift Tuples ➤ High Order Functions and Closures ➤ sort(_:) filter(_:) reduce(_: combine:) map(_:) 2
3. Swift - Fundamental Data Types Int For integer numbers. (8, 16, 32, or 64 bits) UInt Use for positive numbers. (8, 16, 32, or 64 bits) Float For 32-bit floating-point numbers. Double For 64-bit floating-point numbers. (Default) String For textual data. Bool The values are true or false. 3
4. Playground - MobileTea1 4
5. Annotated - MobileTea1 5
6. Playground - MobileTea2 6
7. Playground - MobileTea3 7
8. Snakes and Ladders 8
9. Playground - MobileTea4 9
10. Playground - MobileTea5 10
11. Some Functional Aspects in Swift Higher Order Functions - Functions that take other functions as arguments Closures - Nameless in-place functions The expression syntax for closures is:
 { (parameters) -> return type in statements } Trailing Closure - A closure written following the calling function’s round brackets 11
12. Playground - MobileTea6 sort(_:) and sort( ) 12
13. Playground - MobileTea7 filter(_:) and reduce(Int, _:) 13
14. Playground - MobileTea8 map(_:) 14
15. Getting Started with Xcode and Swift Downloading Xcode - https://developer.apple.com/xcode/download/ Resources - https://developer.apple.com/swift/resources/ Get The Swift Programming Language in ePub format.
 https://swift.org/documentation/ Apple’s site for Open Source Swift - https://swift.org Swift in 24 Hours, Sams Teach Yourself (2nd Edition) By B.J. Miller 15