Part 5 consists Swift iOS interview questions and answers of design and architectural pattern. In this article, I will cover the different concepts of design and architectural pattern briefly such as MVC, MVVM, VIP, VIPER, structural, behavioural and creational design…
In this article, I have answered the questions related to one of the main concepts of Swift iOS interview which is memory management. I will cover some core concepts of memory management such as ARC, retain cycle, circular dependency, reference…
Part 3 consists Swift iOS interview questions and answers of thread and concurrency. It will cover concurrency-related topics such as GCD, NSOperation, operation queue, lock, semaphore etc. Threading and concurrency are important concepts in software development and are especially relevant…
Copy-On-Write (COW) is a memory management technique used in Swift programming language to optimize the performance of memory allocation and deallocation operations. In COW, whenever a new instance of a data structure is created, the original data structure is not…
If you’re an iOS developer, it’s essential to have a thorough understanding of the tools you use on a daily basis. After all, you likely spend 40 or more hours a week working with them, so knowing small hacks that…
Memory management is one of the important concept when it comes to mobile application development. Memory leaks and app crashes are very common due to poorly managed memory in iOS apps. In this short article, I will describe ARC and…
Part 2 consists Swift iOS interview questions and answers of UI – Auto layout & UIKit. It will cover UI related topics such as frame, bound, autolayout constraints, xib, storyborad, safe area etc. What is bounding box? The bounding box…
Access control is very powerful concept in object oriented programming language. Access control helps prevent you from using objects in ways they were not intended to be used. Access control lets you carefully control what properties and methods an entity…
Welcome to the first part of our series on Swift iOS interview questions and answers! In this blog post, we will focus on language features, and cover some common questions you may be asked about Swift during an iOS interview.…
Swift is a very powerful language and it combines both object-oriented and functional programming. It has many exciting features such as closures, function pointers, tuples, and multiple return values, generics, functional programming patterns, etc. In this article, I have collected…
#file, #line and #function are very common to debug features that are available in other languages like C++. I found it very useful to implement debug/logging manager. We can get the current file name, line number and function name from…
Using defer keyword in Swift code is uncommon. But, It is a very powerful concept for certain use case. The code block inside defer statement is executed just before transferring program control. It does not matter how program control is…
The typealias is a simple but powerful concept in Swift. Type alias does not create new types. They simply provide a new name to an existing type. It makes long, compound types easy to manage. In Swift, we are passing…
First-class functions are the core feature of a functional programming language. Swift isn’t a functional programming language. But, it has the power of first-class functions. In this short article let’s have a look at the first-class functions and their application.…
Higher-order functions are used a lot in functional programming. A higher-order function is a function that takes one or more functions as arguments and returns a function or a value as its result. All other functions are first-order functions. Higher-order…
The Final is a class modifier that prevents it from being inherited or being overridden. While writing an API developer might have a class in the framework that can be abused or misused when subclassed. The solution will be the…
