add episode 67 on swift

067-swift/1-print.swift

@@ -0,0 +1 @@
+print("hello world")

067-swift/10-function.swift

@@ -0,0 +1,12 @@
+// 1 function argument
+func greet(name: String) -> String {
+  return "Hello \(name)"
+}
+
+print(greet("Bob"))
+
+func divide(dividend: Int, divisor: Int) -> Double {
+  return Double(dividend / divisor)
+}
+
+print(divide(20, divisor: 2)) // need to put the name of second argumnet

067-swift/11-tuple.swift

@@ -0,0 +1,15 @@
+func calc(num: [Int]) -> (add: Int, sub: Int, area: Int) {
+  let addAnswer = num[0] + num[1]
+  let subAnswer = num[0] - num[1]
+  let area = num[0] * num[1]
+
+  return (addAnswer, subAnswer, area)
+}
+
+let stats = calc([5, 3])
+print(stats)
+print(stats.add)
+print(stats.0)
+
+print(stats.sub)
+print(stats.1)

067-swift/12-unsepcified-args.swift

@@ -0,0 +1,12 @@
+// Int... : any number of integer arguments
+func sumOf(numbers: Int...) -> Int {
+  var sum = 0
+  for number in numbers {
+    sum += number
+  }
+  return sum
+}
+
+print(sumOf())
+print(sumOf(4, 5, 12))
+print(sumOf(4, 5, 12, 10))

067-swift/13-return-func.swift

@@ -0,0 +1,11 @@
+// return a function that takes in an integer and returns an integer
+// () -> ((Int) -> Int)
+func cube() -> ((Int) -> Int) {
+  func powerThree(num: Int) -> Int {
+    return num * num * num
+  }
+  return powerThree
+}
+
+var cuboid1 = cube()
+print(cuboid1(2))

067-swift/14-closure.swift

@@ -0,0 +1,16 @@
+// map
+var numbers = [3, 9, 10, 12]
+
+var mul1 = numbers.map({
+  (num: Int) -> Int in // define params and return type followed by in
+  return 3 * num
+})
+print(mul1)
+
+// when params are known: omit type of parameters or return type
+let mul2 = numbers.map({ num in 3 * num })
+print(mul2)
+
+// using $0
+let mul3 = numbers.map({ 3 * $0 })
+print(mul3)

067-swift/15-class.swift

@@ -0,0 +1,33 @@
+class Person {
+  var firstname: String
+  var lastname: String
+
+  init(firstname: String, lastname: String) {
+    self.firstname = firstname
+    self.lastname = lastname
+  }
+
+  func fullname() -> String {
+    return "\(firstname) \(lastname)"
+  }
+}
+
+var p = Person(firstname: "Igor", lastname: "Novak")
+print(p.fullname())
+
+// Inheritance
+class Neighbour: Person {
+  var neighbourhood: String
+
+  init(firstname: String, lastname: String, neighbourhood: String) {
+    self.neighbourhood = neighbourhood
+    super.init(firstname: firstname, lastname: lastname)
+  }
+
+  override func fullname() -> String {
+    return "\(firstname) \(lastname) from \(neighbourhood)"
+  }
+}
+
+let n = Neighbour(firstname: "Min", lastname: "Ong", neighbourhood: "Stockholm")
+print(n.fullname())

067-swift/2-var-let.swift

@@ -0,0 +1,11 @@
+// mutable or changeable
+var roomTemperature = 25 // celcius
+roomTemperature = 20
+
+print(roomTemperature)
+
+// non-mutable or unchangeable
+let speedOfLight = 299792458 // m/s
+// speedOfLight = 300000000
+
+print(speedOfLight)

067-swift/3-implicit-explicit-conversation.swift

@@ -0,0 +1,5 @@
+let implicitInteger = 70
+let implicitDouble = 80.0
+let explicitDouble: Double = 90
+
+print(explicitDouble)

067-swift/4-explicit-string.swift

@@ -0,0 +1,11 @@
+// http://cosmicdiary.org/fmarchis/files/2014/05/50-years-of-exploration.jpg
+// http://waitbutwhy.com/2015/08/how-and-why-spacex-will-colonize-mars.html
+
+let moonMissions = 72
+let marsMissions = 38
+
+let marsSummary = "There are \(marsMissions) mars missions till today."
+let moonSummary = "There are \(moonMissions - marsMissions) more moon missions till today."
+
+print(marsSummary)
+print(moonSummary)

067-swift/5-array-dictionary.swift

@@ -0,0 +1,17 @@
+// https://en.wikipedia.org/wiki/Internet_Protocol
+
+var ip = [String]()
+ip = [ "link", "internet", "transport", "application" ]
+
+print(ip)
+ip[3] = "app"
+print(ip)
+
+var layers = [
+  "link": [ "Ethernet", "WiFi", "Bluetooth" ],
+  "transport": [ "TCP", "UDP" ]
+]
+
+print(layers)
+layers["app"] = [ "DNS", "HTTP", "SMTP" ]
+print(layers)

067-swift/6-control-flow.swift

@@ -0,0 +1,17 @@
+// https://en.wikipedia.org/wiki/Planetary_mass
+
+let planetMass = [0.06,	0.82,	1,	0.11,	317.8,	95.2,	14.6,	17.2]
+
+var terrestrialPlanetMass: Double = 0
+var jovianPlanetMass: Double  = 0
+
+for mass in planetMass {
+  if (mass > 1) {
+    jovianPlanetMass += mass
+  } else {
+    terrestrialPlanetMass += mass
+  }
+}
+
+print("Terrestrial planet mass is \(terrestrialPlanetMass) earth mass.")
+print("Jovian planet mass is \(jovianPlanetMass) earth mass.")

067-swift/7-optional.swift

@@ -0,0 +1,20 @@
+// http://voyager.jpl.nasa.gov/spacecraft/greetings.html
+var spaceCraft: String = "Voyager"
+// try assigning it nil
+// try type String?
+print(spaceCraft)
+
+var greeting = "Kia ora"
+var alien: String? = "fellow humanoid" // amend to nil
+print(alien!) // force unwrap
+
+if let life = alien {
+  greeting = "Kia ora, \(life)" // amend to \(alien)
+}
+print(greeting)
+
+
+let nickname: String? = "Anna"
+let fullname: String = "Anastasia"
+let welcome = "Hi \(nickname ?? fullname)!"
+print(welcome)

067-swift/8-switch-case.swift

@@ -0,0 +1,12 @@
+let body = "comet 67P"
+
+switch body {
+case "mars":
+print("Mars orbiter reached the Mars orbit in Sept 2014.")
+case "jupiter", "uranus", "pluto":
+  print("New Horizons reached Pluto in July 2015")
+case let x where x.hasPrefix("comet"):
+  print("Rosetta mission reached in August 2014")
+default:
+  print("Hello cosmic missions!")
+}

067-swift/9-limits.swift

@@ -0,0 +1,9 @@
+for i in 0..<4 {
+  print(i)
+}
+
+print("----")
+
+for i in 0...4 {
+  print(i)
+}

067-swift/readme.md

@@ -0,0 +1,3 @@
+067 Swift
+
+For explanatory notes, video file, tool version and other info, please refer to the [screencast link](http://build-podcast.com/swift/)

_posts/2016-04-09-swift.md

@@ -0,0 +1,49 @@
+---
+title: 067 Swift
+title_lowercase: 067 swift
+layout: post
+tags: tutorial, screencast, technology, development, ios, swiftnew programming language developed by Apple. In this episode, we will go through some of the basic language attributes.
+permalink: /swift/
+enclosure: http://video.build-podcast.com/067-swift.mp4
+length: 502969366
+version: 2.2
+website: https://developer.apple.com/swift/
+---
+
+<div id="video"><iframe width="560" height="315" src="//www.youtube.com/embed/Ib1PkE1dgtc" frameborder="0" allowfullscreen></iframe></div>
+
+[Swift](https://developer.apple.com/swift/) is a fairly new programming language developed by Apple. In this episode, we will go through some of the basic language attributes.
+
+<p><strong>Download video</strong>: <a href="http://video.build-podcast.com/067-swift.mp4" download="build-podcast-067-swift.mp4">mp4</a></p>
+
+**Sample code**:  [Github](https://github.com/sayanee/build-podcast/tree/master/067-swift)
+
+**Version**: 2.2
+
+## Background on Swift
+
+1. [Learn one new programming language per year](http://martinfowler.com/bliki/OneLanguage.html)
+- [Swift overview](https://developer.apple.com/swift/)
+- [Welcome to Swift](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/)
+- [Swift resources](https://developer.apple.com/swift/resources/)
+- [Swift tour](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/GuidedTour.html#//apple_ref/doc/uid/TP40014097-CH2-ID1)
+
+## Things to learn with Swift
+
+### Basics
+
+1. Download the [latest xCode](https://developer.apple.com/xcode/download/)
+- Check the version in your command line: `swift --version`
+- Check the common commands: `swift --help`
+- Check where the executable is hosted: `which swift`
+- Create a file called `1-print.swift` with the code
+
+  ```swift
+  print("hello world")
+  ```
+- Run it in the command line with `swift {FILENAME}` E.g. `swift 1-print.swift`
+- Try out the code and run them in the command line
+
+## Build Link of this episode
+
+Learn [iOS with Swift](https://developer.apple.com/library/ios/referencelibrary/GettingStarted/DevelopiOSAppsSwift/Lesson1.html)

start/index.html

@@ -20,9 +20,9 @@
   <img src="http://build-podcast.com/logo.svg" class="start">
 
   <div class="content">
-    <h1>066 ES2015</h1>
-    <h4>the next JS standard</h4>
-    <h6>Version: 2015</h6>
+    <h1>067 Swift</h1>
+    <h4>A modern programming language that is safe, fast, and interactive.</h4>
+    <h6>Version: 2.2</h6>
     <img src="logo.png" class="episode-logo">
     <p class="credit"></p>
   </div>