iOS Design Patterns
Singleton, Factory, Builder, Observer, Coordinator, Repository, Dependency Injection, SOLID
1Which pattern guarantees only one instance of a class throughout the application?
Which pattern guarantees only one instance of a class throughout the application?
Câu trả lời
The Singleton pattern restricts instantiation to a single global instance. In iOS, it enables centralized access to shared resources like configurations or managers. However, Singletons reduce testability by creating hard-to-mock global dependencies.
2Which pattern abstracts object creation without exposing the exact instantiation logic?
Which pattern abstracts object creation without exposing the exact instantiation logic?
Câu trả lời
The Factory pattern encapsulates object creation in a dedicated method or class. This allows modifying creation logic without affecting client code. In iOS, factory methods simplify managing complex dependencies and facilitate testing through easy substitutions.
3Which pattern constructs complex objects step-by-step while separating construction from representation?
Which pattern constructs complex objects step-by-step while separating construction from representation?
Câu trả lời
The Builder pattern enables creating objects with many optional parameters without overloading constructors. In iOS, it improves code clarity and maintenance. Unlike Factory that returns immediately, Builder allows progressive and fluid configuration.
Which pattern defines a one-to-many dependency where observers are automatically notified of changes?
What is the main use of a Factory to create objects with conditional logic?
+21 câu hỏi phỏng vấn
Các chủ đề phỏng vấn iOS khác
Swift Basics
Swift Language Essentials
UIKit Fundamentals
UIViewController Lifecycle
UserDefaults & Keychain
Application Lifecycle
Auto Layout & Constraints
UITableView & UICollectionView
SwiftUI Basics
SwiftUI State Management
SwiftUI Navigation
Networking & URLSession
Codable & JSON Parsing
Core Data
Protocol Oriented Programming
MVVM Architecture
Push Notifications
Unit Testing & XCTest
UI Testing
Xcode & Build System
Swift Package Manager
Memory Management & ARC
Combine Framework
Concurrency & async/await
Performance Optimization
Security & Encryption
SwiftUI Advanced
iOS Application Architecture
Nắm vững iOS cho lần phỏng vấn tiếp theo
Truy cập tất cả câu hỏi, flashcards, bài kiểm tra kỹ thuật, bài tập code review và mô phỏng phỏng vấn.
Bắt đầu miễn phí