JohnSundell

struct ModelIterator: IteratorProtocol {
    private let database: Database
    private var index = 0
    
    init(database: Database = .shared) {
        self.database = database
    }
    
    mutating func next() -> Model? {
        let model = database.model(at: index)

JohnSundell

func searchForModel(matching query: String) -> Model? {
    for model in ModelSequence() {
        if model.title.contains(query) {
            return model
        }
    }
    
    return nil
}

JohnSundell

class ModelLoader {
    func loadAllModels() -> AnySequence<Model> {
        return AnySequence { () -> AnyIterator<Model> in
            var index = 0
            
            return AnyIterator {
                let model = database.model(at: index)
                index += 1
                return model
            }

JohnSundell

echo "$(date +%s)" > "buildtimes.log"

JohnSundell

startime=$(<buildtimes.log)
endtime=$(date +%s)
deltatime=$((endtime-startime))
newline=$'\n'
echo "[Start] $startime$newline[End] $endtime$newline[Delta] $deltatime" > "buildtimes.log"

JohnSundell

func +<A: IntegerConvertible, B: IntegerConvertible>(lhs: A, rhs: B) -> CustomNumber {
    return CustomNumber(int: lhs.int + rhs.int)
}

JohnSundell

func addNumbers() -> CustomNumber {
    return CustomNumber(int: 1) +
           CustomNumber(int: 2) +
           CustomNumber(int: 3) +
           CustomNumber(int: 4) +
           CustomNumber(int: 5)
}

JohnSundell

extension IntegerConvertible {
    func add<T: IntegerConvertible>(_ number: T) -> CustomNumber {
        return CustomNumber(int: int + number.int)
    }
}

func addNumbers() -> CustomNumber {
    return CustomNumber(int: 1).add(CustomNumber(int: 2))
                               .add(CustomNumber(int: 3))
                               .add(CustomNumber(int: 4))

JohnSundell

extension User {
    func toJSON() -> [String : Any] 
        return [
            "firstName": firstName,
            "lastName": lastName,
            "age": age,
            "friends": friends.map { $0.toJSON() },
            "coworkers": coworkers.map { $0.toJSON() },
            "favorites": favorites.map { $0.toJSON() },
            "messages": messages.map { $0.toJSON() },

JohnSundell

extension User {
    func toJSON() -> [String : Any] {
        var json = [String : Any]()
        json["firstName"] = firstName
        json["lastName"] = lastName
        json["age"] = age
        json["friends"] = friends.map { $0.toJSON() }
        json["coworkers"] = coworkers.map { $0.toJSON() }
        json["favorites"] = favorites.map { $0.toJSON() }
        json["messages"] = messages.map { $0.toJSON() }