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protocol Vehicle {

    var name: String { get }

    associatedtype FuelType
    func fillGasTank(with fuel: FuelType)
}

struct Car: Vehicle {

SeRG1k17

```swift
import Combine

extension Publisher {

    func fromResult<T, E>() -> AnyPublisher<T, E>
    where Self.Failure == Never, Self.Output == Result<T, E>, E: Error {
        setFailureType(to: E.self)
            .tryMap { (result: Self.Output) -> T in
                switch result {

SeRG1k17

extension Publisher {
    
    func unwrap() -> Publishers.CompactMap<Self, Self.Output> {
        return compactMap({ $0 })
    }
    
    func startWith1(_ value: Self.Output) -> Publishers.Merge<AnyPublisher<Self.Output, Self.Failure>, Self> {
        return Publishers.Merge(Just(value).setFailureType(to: Self.Failure.self).eraseToAnyPublisher(), self)
    }
    

SeRG1k17

// https://gist.github.com/MrAlek/3d1520ca2c5d981489e2

import UIKit

enum Direction {
    case left, right, up, down

    var pointVector: CGPoint {
        switch self {
        case .left: return CGPoint(x: -1, y: 0)

SeRG1k17

{
    address =     {
        addressText = "toru\U0144ski";
        apartment = "<null>";
        cityId = 1;
        floor = "<null>";
        id = 0;
        intercom = "<null>";
        latitude = "53.13196290250359";
        longitude = "18.30662839114666";