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Вопросы на собеседование iOS разработчика (дополненное издание):

General:

• Что такое полиморфизм?

• Что такое *инкапсуляция? Что такое *нарушение инкапсуляции?

• Чем абстрактный класс отличается от интерфейса?

• Расскажите о паттерне MVC. Чем отличается пассивная модель от активной?

V8tr

//: Playground - noun: a place where people can play

import Foundation

protocol JSONSerializable {
	func toJSON() throws -> Any?
}

enum CouldNotSerializeError: Error {
	case noImplementation(source: Any, type: String)

V8tr

import Foundation

protocol JSONSerializable {
    func toJSON() throws -> Any?
}

enum CouldNotSerializeError: Error {
    case noImplementation(source: Any, type: String)
    case undefinedKey(source: Any, type: String)
}

V8tr

import Foundation
import XCTest

protocol AutoEquatable: Equatable {}

extension AutoEquatable {

    static func ==(lhs: Self, rhs: Self) -> Bool {
        var lhsDump = String()
        dump(lhs, to: &lhsDump)

V8tr

git log --graph --pretty=oneline --abbrev-commit

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extension URLRequest {
  
    /**
     Returns a cURL command representation of this URL request.
     */
    public var curlString: String {
        guard let url = url else { return "" }
        var baseCommand = "curl \(url.absoluteString)"
        
        if httpMethod == "HEAD" {

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/// This is free and unencumbered software released into the public domain.
/// 
/// Anyone is free to copy, modify, publish, use, compile, sell, or
/// distribute this software, either in source code form or as a compiled
/// binary, for any purpose, commercial or non-commercial, and by any
/// means.
/// 
/// In jurisdictions that recognize copyright laws, the author or authors
/// of this software dedicate any and all copyright interest in the
/// software to the public domain. We make this dedication for the benefit

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{
    "usages": [
        {
            "additionalUsage": 0,
            "freeResourcGroups": [
                {
                    "groupId": "1002",
                    "groupName": "VOICE",
                    "resourceUnit": "102",
                    "resources": [

V8tr

import Foundation

// MARK: - Locks

protocol Lock {
    func lock()
    func unlock()
}

extension NSLock: Lock {}

V8tr

// MARK: - DispatchQueue

class DispatchQueueAtomicProperty {
    private let queue = DispatchQueue(label: "com.vadimbulavin.DispatchQueueAtomicProperty")
    private var underlyingFoo = 0

    var foo: Int {
        get {
            return queue.sync { underlyingFoo }
        }