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import Foundation
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

// 1
struct User: Equatable {
    // 2
    struct Address: Equatable {

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import Foundation
import PlaygroundSupport
import Combine

PlaygroundPage.current.needsIndefiniteExecution = true

let queue = DispatchQueue(label: "some")
_ = Future<String, Never> { promise in
    queue.asyncAfter(deadline: .now() + 2, execute: {
        print(Thread.current)

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// Swift Playground example of Redux JS framework

import Foundation
import PlaygroundSupport


// MARK: Action

public protocol Action {
    associatedtype T = Any

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import Foundation

var count = 0
let group = DispatchGroup()

group.enter()
let thread1 = Thread {
    for _ in 0...9999 {
        count += 1
    }

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import Foundation

class Object { 
    let identifier: String
    init(identifier: String) {
        self.identifier = identifier
    }
}

protocol MutableCollectionProtocol {

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import Foundation

class A: NSObject {
    weak var delegate: B?
}

class B: NSObject {
    weak var delegate: A?
}

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import Foundation


var array = [1, 2, 3]

for number in array {
    print(number) // 1
    array = [4, 5, 6]
}
print(array) // 2

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General

• Что такое "Project Purple"?
  • answer
  • answer
• Каких Русских/Иностранных iOS программистов/медийных личностей вы знаете? (Steve Voznyak, Chris Eidhof, Florian Kugler, Mattt Thompson, Ray Wenderlich, Егор Толстой, Андрей Панов, Александр Зимин)
• Какие сайты читаете?
• NSRunLoop: что это? как работает? для чего нужно?
  • answer
  • answer
• Что такое UIApplication? UIApplication delegate? Каким образом вызываются методы делегата?

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#iOS Interview

1. Snippets

• Какие есть проблемы с этим кодом?

// OTTAvatarView.h

#import <UIKit/UIKit.h>

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iOS Interview Questions

Sources include, but not limited to:

• https://izeeshan.wordpress.com/2015/03/31/interview-stuff/
• https://github.com/9magnets/iOS-Developer-and-Designer-Interview-Questions
• https://www.quora.com/What-do-startups-look-for-in-a-candidate-during-an-iOS-technical-interview-What-do-they-want-to-hear
• https://www.linkedin.com/pulse/ios-interview-questions-senior-developers-alex-bush
• https://www.raywenderlich.com/110982/swift-interview-questions-answers

In Swift, what is the difference between a struct and a class?