Swift Programming Language

Swift Programming Language

• 1.
  Swift Programming Language
• 2.
  Hello World println(“Hello World!”) //varusing make a variable. var hello = “Hello” //let using make a constants. let world = “World!” println(“(hello) (world)”)
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  Simple Values var name= “ANIL” //Weight type is Double. var weight: Double = 74.4 //Correct. var myVariable = 4 myVariable = 10 //Wrong, because myVariable type is Integer now. var myVariable = 4 myVariable = “Four”
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  Simple Values var text= “ANIL” var number = 7 //Combining two variables to one variable. var textNumber = text + String(number) println(textNumber)
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  For - If- Else - Else If //0,1,2,3,4,5,6,7,8,9 for var i = 0; i < 10; i++ { println(i) } //1,2,3,4,5 for i in 1…5 { println(i) } if condition { /* Codes */ } else if condition { /* Codes */ } else { /* Codes */ }
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  Switch - Case varstr = “Swift” //break is automatically in Swift switch str { case “Swift”, “swift”: println(“Swift”) case “Objective - C”: println(“Objective - C”) default: println(“Other Language”) }
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  Switch - Case letsomePoint = (2,0) //We can giving a label. mainSwitch: switch somePoint { case (2,0) where somePoint.0 == 2: println(“2,0”) //Second case working to. fallthrough //x value doesn’t matter. case (_,0): println(“_,0”) default: println(“Other Point”) }
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  Array - Dictionary //Makean array. var cities = [“Istanbul”, “Sivas”, “San Francisco”, “Seul”] println(cities[0]) //Make a dictionary. var cityCodes = [ “Istanbul Anadolu” : “216”, “Istanbul Avrupa” : “212”, “Ankara” : ”312” ] println(cityCodes[“Istanbul Anadolu”]!)
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  Array var stringArray =[“Hello”, “World”] //Add element into the array. stringArray.append(“Objective - C”) //Insert element into the array. stringArray.insert(“Apple”, atIndex: 2) //Remove element into the array. stringArray.removeAtIndex(3) //Remove last element into the array. stringArray.removeLast()
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  //Get element intothe array. stringArray[1] stringArray[1…3] //Get all elements into the array. for (index, value) in enumerate(stringArray) { println(“(index + 1). value is: (value)”) } //Get element count in the array. stringArray.count Array
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  var airports =[“SAW” : “Sabiha Gokcen Havalimani”, “IST” : “Ataturk Havalimani”] //Add element in the dictionary. airports[“JFK”] = “John F Kennedy” //Get element count in the dictionary. airports.count //Update element in the dictionary. airports.updateValue(“John F Kennedy Terminal”, forKey: “JFK”) Dictionary
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  Dictionary //Remove element inthe dictionary. airports.removeValueForKey(“JFK”) //Get all elements into the dictionary. for (airportCode, airport) in airports { println(“Airport Code: (airportCode) Airport: (airport)”) } //Get all keys. var keysArray = airports.keys //Get all values. var valuesArray = airports.values
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  Functions //Make a function. funchello(){ println(“Hello World!”) } //Call a function. hello() //personName is parameter tag name. func helloTo(personName name:String){ println(“Hello (name)”) }
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  Functions /*＃it works, sameparameter name and parameter tag name. This function returned String value. */ func printName(＃name: String) -> String{ return name } //This function returned Int value. func sum(＃numberOne: Int numberTwo: Int) -> Int{ return numberOne + numberTwo }
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  Functions //Tuple returns multiplevalue. func sumAndCeiling(＃numberOne: Int numberTwo: Int) -> (sum: Int, ceiling: Int){ var ceiling = numberOne > numberTwo ? numberOne : numberTwo var sum = numberOne + numberTwo return (sum,ceiling) }
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  Functions func double(number:Int) ->Int { return number * 2 } func triple(number:Int) -> Int { return number * 3 } func modifyInt(＃number:Int modifier:Int -> Int) -> Int { return modifier(number) } //Call functions modifyInt(number: 4 modifier: double) modifyInt(number: 4 modifier: triple)
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  Functions /* This functionhave inner function and returned function, buildIncrementor function returned function and incrementor function returned Int value. */ func buildIncrementor() -> () -> Int { var count = 0 func incrementor() -> Int{ count++ return count } return incrementor }
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  Functions /* Take unlimitedparameter functions */ func avarage(＃numbers:Int…) -> Int { var total = 0; for n in numbers{ total += n; } return total / numbers.count; }
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  Structs /* Creating Struct*/ struct GeoPoint { //Swift doesn’t like empty values var latitude = 0.0 var longitude = 0.0 } /* Initialize Struct */ var geoPoint = GeoPoint() geoPoint.latitude = 44.444 geoPoint.longitude = 12.222
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  Classes /* Creating Class*/ class Person { var name:String var age:Int //nickname:String? is optional value. var nickname:String? init(name:String, age:Int, nickname:String? = nil){ self.name = name self.age = age self.nickname = nickname } }
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  Classes /* Creating SubClass */ class Class : SuperClass { var name:String init(name:String){ self.name = name super.init(age: age, nickname: nickname) } func printName(){ println(name) } }
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  Classes /* Creating Class(Static) Method */ class MyClass { class func printWord(＃word:String) { println(word) } } /* Calling Class (Static) Method */ MyClass.printWord(word: “Hello World!”)
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  Enums /* Creating Enum*/ enum Direction { case Left case Right case Up case Down } //Call Enum Value Direction.Right or var direction:Direction direction = .Up
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  Enums /* Creating Enumwith Parameter(s) */ enum Computer { //RAM, Processor case Desktop(Int,String) //Screen Size case Laptop(Int) } //Call Enum Value with Parameter(s) var computer = Computer.Desktop(16,”i7”)
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  Enums /* Creating Enumwith Int */ enum Planet:Int { case Mercury = 1, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune } /* Call Enum Value for Raw Value */ //Returns 3 Planet.Earth.toRaw() //Returns Mars (Optional Value) Planet.Earth.fromRaw(4)