Dive Into Swift

Nov 2, 2015Download as pptx, pdf0 likes258 views

Almost year and half after it’s first appearance, Apple’s new programming language Swift has reached version 2.1. Apple promises that Swift is powerful, intuitive and fast programming language for iOS, OS X and watchOS. We'll take look at the basic syntax and language constructs using Xcode 7 to see if apple fulfils it's promises. Presentation by Kritijan Frankovic.

Swift
 Powerful, intuitive, safe, fast, interactive, concise…
 iOS, OS X, watchOS
 Object-oriented, functional, static, strong typing…
 Beta – June 2014
 1.0 – September 2014
 1.2 – April 2015
 2.1 – October 21, 2015

Swift 1.2 vs 2.1
 Xcode 6 (1.2) -> Xcode 7 (2.x) – bunch of syntax errors
 Migration assistant (Edit / Convert / To latest
 println -> print
 Join (“”, components) -> components.joinWithSeparator(“”)
 Error handling (1.2)
var error: NSError?
var something = context!.executeFetchRequest(request, error: &error)
 Error handling (2.x)
do {
var something = context.executeFetchRequest(request)
} catch let error as NSError {
// do something with error
}

Swift vs Objective-C
 Objective-C:
Person *franc = [[Person alloc] initWithName:@"Kristijan"];
[franc sayHello];
var franc = Person(name:"Kristijan")
franc.sayHello()
 Swift:

Objective-C Compatibility
 Bridging
 iOS was developed in Objective-C
 Virtually all iOS API is accessible seamlessly from Swift
 Special data types – easier use of iOS API from Obj-c
 NSString, NSArray, NSDictionary, NSNumber (int, float, double, bool)
 Import Objective-C code in Swift project and vice-versa

Demo
Demo code is available at GitHub Gist:
https://gist.github.com/kfrankovic/61da4e0210e4861603e1

More info…
 iOS Developer Library – The Swift Programming Language
 https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/
Swift_Programming_Language/index.html
 Stanford – Developing iOS 8 Apps with Swift [2015] (CS193p, Winter 2015)
 https://www.youtube.com/watch?v=GOEPVM5OzJk&list=PLy7oRd3ashWodnpf8rjfYEk
TgwbOEsKfU
 Google 

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