aleos

for family in UIFont.familyNames.sorted() {
    let names = UIFont.fontNames(forFamilyName: family)
    print("Family: \(family) Font names: \(names)")
}

aleos

struct ContentView: View {
    @State var text = "Test"
    var body: some View{
        NavigationView {
            VStack {
                TextField("enter email", text: .constant(""))
                    .textFieldStyle(.roundedBorder)
                Spacer()
                Button {} label: {
                    Text("Next")

aleos

// AVAsset
let asset: AVAsset(URL: NSURL(string: "..."))
let assetSizeBytes = asset.tracksWithMediaType(AVMediaTypeVideo).first?.totalSampleDataLength

// File
let fileOnDiskSizeBytes = try! NSFileManager.defaultManager().attributesOfItemAtPath("...")[NSFileSize] as! NSNumber

aleos

protocol Copyable {
    init(copy:Self)
}

extension Copyable {
    func copy() -> Self {
        return Self.init(copy: self)
    }
}

aleos

let numbers: [Any] = [Int(3), Double(4.0), Int(7)]
for number in numbers {
    switch number {
    case is Int:
        print("Integer")
    case is Double:
        print("Double")
    default: break
    }
}