rcholic

iOS Topic Questions

(from https://courses.codepath.com/courses/intro_to_ios/pages/ios_topic_questions)

Below you'll find questions that you should be able to answer after taking the iOS class. Some questions are commonly used in iOS interviews.

Views

• What properties of a view can be animated? (source: https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CoreAnimation_guide/AnimatableProperties/AnimatableProperties.html) name a few: anchorPoint, backgroundColor, borderColor, borderWidth, contents, frame, mask, transform, zPosition

• What is a CALayer? (source: https://www.raywenderlich.com/2502/calayers-tutorial-for-ios-introduction-to-calayers-tutorial)

brennanMKE

import PlaygroundSupport
import Foundation

class Worker {
    
    private let queue = DispatchQueue.global(qos: .background)
    private let serialQueue = DispatchQueue(label: "com.acme.serial")
    public private(set) var count = 0
    
    func incrementCount() {

basememara

import Foundation
import PlaygroundSupport

/// A thread-safe array.
public class SynchronizedArray<Element> {
    private let queue = DispatchQueue(label: "io.zamzam.ZamzamKit.SynchronizedArray", attributes: .concurrent)
    private var array = [Element]()
    
    public init() { }