bat/tests/syntax-tests/highlighted/Swift/test.swift

class Person {
// We can define class property here
var age = 25
// Implement Class initializer. Initializers are called when a new object of this class is created
init() {
print(“A new instance of this class Person is created.”)
}
}
// We can now create an instance of class Person - an object - by putting parentheses after the class name
let personObj = Person()
// Once an instance of Person class is created we can access its properties using the dot “.” syntax.
print(“This person age is \(personObj.age)”)
 
import Foundation
class Friend : Comparable {
let name : String
let age : Int

init(name : String, age: Int) {
self.name = name
self.age = age
}
}
func < (lhs: Friend, rhs: Friend) -> Bool {
return lhs.age < rhs.age }; func > (lhs: Friend, rhs: Friend) -> Bool {
return lhs.age > rhs.age
}
func == (lhs: Friend, rhs: Friend) -> Bool {
var returnValue = false
if (lhs.name == rhs.name) && (lhs.age == rhs.age)
{
returnValue = true
}
return returnValue
}
 
let friend1 = Friend(name: "Sergey", age: 35)
let friend2 = Friend(name: "Sergey", age: 30)

print("Compare Friend object. Same person? (friend1 == friend2)")
 
func sayHelloWorld() {
print("Hello World")
}
// Call function
sayHelloWorld()
 
func printOutFriendNames(names: String...) {

for name in names {

print(name)
}

}
// Call the printOutFriendNames with two parameters
printOutFriendNames("Sergey", "Bill")
// Call the function with more parameters
printOutFriendNames("Sergey", "Bill", "Max")
 
let simpleClosure = {
print("From a simpleClosure")
}
// Call closure
simpleClosure()
 
let fullName = { (firstName:String, lastName:String)->String in
return firstName + " " + lastName
}
// Call Closure
let myFullName = fullName("Sergey", "Kargopolov")
print("My full name is \(myFullName)")
 
let myDictionary = [String:String]()
// Another way to create an empty dictionary
let myDictionary2:[String:String] = [:]
// Keys in dictionary can also be of type Int
let myDictionary3 = [Int:String]()
 
var myDictionary = ["first_name": "Sergey", "last_name": "Kargopolov"]
// print to preview
print(myDictionary)
// Add a new key with a value
myDictionary["user_id"] = "f5h7ru0tJurY8f7g5s6fd"
// We should now have 3 key value pairs printed
print(myDictionary)
 
var myDictionary = ["first_name": "Sergey", "last_name": "Kargopolov"]
// Loop through dictionary keys and print values
for (key,value) in myDictionary {
print("\(key) = \(value)")
}
class Friend {
let name : String
let age : Int

init(name : String, age: Int) {
self.name = name
self.age = age
}
}
 
var friends:[Friend] = []

let friend1 = Friend(name: "Sergey", age: 30)
let friend2 = Friend(name: "Bill", age: 35)
let friend3 = Friend(name: "Michael", age: 21)

friends.append(friend1)
friends.append(friend2)
friends.append(friend3)

printFriends(friends: friends)

// Get sorted array in descending order (largest to the smallest number)
let sortedFriends = friends.sorted(by: { $0.age > $1.age })
printFriends(friends: sortedFriends)

// Get sorted array in ascending order (smallest to the largest number)
let sortedFriendsAscendingOrder = friends.sorted(by: { $0.age < $1.age })
printFriends(friends: sortedFriendsAscendingOrder)
 
 
func printFriends(friends: [Friend])
{
for friendEntry in friends {
print("Name: \(friendEntry.name), age: \(friendEntry.age)")
}
}
 
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)

// Create destination URL
let documentsUrl:URL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
let destinationFileUrl = documentsUrl.appendingPathComponent("downloadedFile.jpg")

//Create URL to the source file you want to download
let fileURL = URL(string: "https://s3.amazonaws.com/learn-swift/IMG_0001.JPG")

let sessionConfig = URLSessionConfiguration.default
let session = URLSession(configuration: sessionConfig)

let request = URLRequest(url:fileURL!)

let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
if let tempLocalUrl = tempLocalUrl, error == nil {
// Success
if let statusCode = (response as? HTTPURLResponse)?.statusCode {
print("Successfully downloaded. Status code: \(statusCode)")
}

do {
try FileManager.default.copyItem(at: tempLocalUrl, to: destinationFileUrl)
} catch (let writeError) {
print("Error creating a file \(destinationFileUrl) : \(writeError)")
}

} else {
print("Error took place while downloading a file. Error description: %@", error?.localizedDescription);
}
}
task.resume()

}
}
 
do {

// Convert JSON Object received from server side into Swift NSArray.
// Note the use "try"
if let convertedJsonIntoArray = try JSONSerialization.JSONObjectWithData(data!, options: []) as? NSArray {
}

} catch let error as NSError {
print(error.localizedDescription)
}
 
DispatchQueue.global(qos: .userInitiated).async {
// Do some time consuming task in this background thread
// Mobile app will remain to be responsive to user actions

print("Performing time consuming task in this background thread")

DispatchQueue.main.async {
// Task consuming task has completed
// Update UI from this block of code
print("Time consuming task has completed. From here we are allowed to update user interface.")
}
}
 
import UIKit
class ViewController: UIViewController {

override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.

let button = UIButton(type: UIButtonType.system) as UIButton

let xPostion:CGFloat = 50
let yPostion:CGFloat = 100
let buttonWidth:CGFloat = 150
let buttonHeight:CGFloat = 45

button.frame = CGRect(x:xPostion, y:yPostion, width:buttonWidth, height:buttonHeight)

button.backgroundColor = UIColor.lightGray
button.setTitle("Tap me", for: UIControlState.normal)
button.tintColor = UIColor.black
button.addTarget(self, action: #selector(ViewController.buttonAction(_:)), for: .touchUpInside)

self.view.addSubview(button)
}

func buttonAction(_ sender:UIButton!)
{
print("Button tapped")
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}


}
 
import UIKit
class ViewController: UIViewController {

override func viewDidLoad() {
super.viewDidLoad()

//Create Activity Indicator
let myActivityIndicator = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)

// Position Activity Indicator in the center of the main view
myActivityIndicator.center = view.center

// If needed, you can prevent Acivity Indicator from hiding when stopAnimating() is called
myActivityIndicator.hidesWhenStopped = false

// Start Activity Indicator
myActivityIndicator.startAnimating()

// Call stopAnimating() when need to stop activity indicator
//myActivityIndicator.stopAnimating()


view.addSubview(myActivityIndicator)
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}

}