lucianoschillagi

import Foundation

enum TrafficLight {
    case red, yellow, green // TrafficLight cases
    mutating func next() {
        switch self { // self = TrafficLight
        case .red:
            self = .green
        case .green:
            self = .yellow

lucianoschillagi

import Foundation

// Converting JSON into data
let json = """
{
    "name": "Dog",
    "legs": 4
}
""".data(using: .utf8)!

lucianoschillagi

import SwiftUI

struct ContentView: View {
    
    let url = URL(string: "https://dc4p.store")!
    @State private var message = "Loading..."

    var body: some View {
        Text(message)
            .task {

lucianoschillagi

import SwiftUI

struct ContentView: View {
    
    // tracking changes of this property via 'onChange' method
    @State private var notificationsEnabled = false
    
    var body: some View {
        Toggle("Notifications", isOn: $notificationsEnabled)
            .padding()

lucianoschillagi

import SwiftUI

struct ContentView: View {
    @State private var isSheetPresented: Bool = false

    var body: some View {
        VStack {
            Button("Show Sheet") {
                isSheetPresented = true
            }

lucianoschillagi

import Foundation

// Enumerations with Associated Values
enum OrderStatus {
    case pending(orderID: Int, isAnOffer: Bool)
    case shipped(orderID: Int, trackingNumber: String, isAnOffer: Bool)
    case delivered(orderID: Int, date: String, signature: String?, isAnOffer: Bool)
}

// Usage examples

lucianoschillagi

import Foundation

let beatles: Set<String> = ["John", "Paul", "George", "Ringo"] // unique values - hash value

for member in beatles {
    print("'Beatle \(member)' has a hash value →", member.hashValue)
}

print("The Beatles was →", beatles.count)

lucianoschillagi

import Foundation

struct Beatle {
    let name = "George Harrison"
    let instrument = "Guitar and Vocals"
    let yearOfBorn = 1943
    let hisHitsSongs = ["Something", "Here comes the sun", "My Sweet Lord", "While My Guitar Gently Weeps"]
    let wasAGreatMusician = true
}

lucianoschillagi

import Foundation

enum Percentaje: String {
    case ten     = "◉ ○ ○ ○ ○ ○ ○ ○ ○ ○"
    case twenty  = "◉ ◉ ○ ○ ○ ○ ○ ○ ○ ○"
    case thirty  = "◉ ◉ ◉ ○ ○ ○ ○ ○ ○ ○"
    case fourty  = "◉ ◉ ◉ ◉ ○ ○ ○ ○ ○ ○"
    case fifty   = "◉ ◉ ◉ ◉ ◉ ○ ○ ○ ○ ○"
    case sixty   = "◉ ◉ ◉ ◉ ◉ ◉ ○ ○ ○ ○"
    case seventy = "◉ ◉ ◉ ◉ ◉ ◉ ◉ ○ ○ ○"

lucianoschillagi

import SwiftUI

struct ContentView: View {
    
    @Environment(\.myCustomValue) private var myCustomValue
    
    var body: some View {
        Text(myCustomValue).font(.title2)
    }
}