What is DispatchGroup and when should we use it?

DispatchGroup allows developers to manage groups of tasks that run concurrently. It helps to synchronize multiple asynchronous tasks and wait for all of them to complete before moving on to the next task. The DispatchGroup class provides enter() & leave() methods, to manage tasks that are executed asynchronously. When a task is started, you call the enter() method, and when the task is finished, you call the leave() method. The DispatchGroup class keeps track of the number of uncompleted tasks in the group, and when the count reaches zero, the notify() method is called, indicating that all tasks in the group have completed. Suppose you will display average weather for several cities, by fetching weather data asynchronously… DispatchGroup is useful in situations where you have multiple asynchronous tasks that need to be synchronized before proceeding to the next task. It simplifies the code by providing a structured way to manage tasks that are executed concurrently, and ensures that all tasks have completed before continuing with the next step.

Type erasure in Swift and when it would be used

In Swift, type erasure is a technique used to abstract away the concrete type of a value and replace it with a protocol that describes the behavior of the value. This allows you to work with values in a generic way, without having to know the specific types of those values at compile time. Type erasure is often used when you have a collection of values with different concrete types that all share a common behavior. By creating a protocol that describes that behavior and implementing it for each concrete type, you can create a collection of values that all conform to the protocol. You can then use the protocol to work with the values in the collection in a generic way, without having to know their concrete types. Here’s an example. Let’s say you have a collection of shapes: You want to calculate the area of each shape in the collection, but you don’t want to write separate code for each shape type. Instead, you can create a protocol that describes the behavior of shapes that have an area: You can then implement the protocol for each concrete shape type: Finally, you can use type erasure to create a…

Breaking into the iOS Development Industry: A Step-by-Step Guide to Securing Your First Job

The iOS development industry is a lucrative and constantly evolving field that has seen tremendous growth over the years. With the increasing demand for mobile applications, iOS developers are in high demand, and the job market for them is expected to continue growing in the coming years. However, breaking into the iOS development industry can be challenging, especially for beginners. In this article, I’ll provide you with a step-by-step guide on how to secure your first job as an iOS developer. Step 1: Enhance Your iOS Skillset Alrighty, so you’ve got your sights set on becoming an iOS developer – good on you! The first step on this exciting journey is to build up your skills. As an iOS developer, you’ll need to be well-versed in Swift, SwiftUI, and other iOS frameworks that are relevant to the job. You’ll also need to have a strong understanding of the iOS Human Interface Guideline and API Design Guideline, so it’s worth brushing up on those too. There are plenty of ways to improve your skills and knowledge. You could learn from Apple documentation, WWDC, many other free resources on internet, or join iOS development communities where you can learn from and collaborate…

iOS Architectural Patterns: The Beginner Guide

iOS architectural patterns refer to the different ways in which iOS developers organize and structure the codebase of their apps. When it comes to developing iOS apps, it’s important to choose the right architectural pattern in the beginning or at least adapt one as soon as possible. Choosing the right pattern can help you build an application that is scalable, maintainable, and reusable. On the other hand, choosing the wrong pattern can lead to a codebase that is difficult to maintain and debug. In this article, we’ll explore some of the most commonly used iOS architectural patterns and discuss their benefits, drawbacks, and how to use them effectively. What is Architecture Pattern? Architecture patterns refer to the patterns that are used to structure and organize the code in an iOS application. It’s like the blueprint that defines how different parts of the code will interact with each other and how the app will be built. Now, let’s take the example of a house. Just like a house has a structure and a layout, an iOS app also needs to have a structure to make it functional and user-friendly. And just like a house can be built using different architectural styles,…

What’s New in Swift 5.8, Xcode 14.3 & iOS 16.4

Swift 5.8 is set to release with a host of new features and improvements, including implicit self for weak self captures, conditional compilation for attributes, and the addition of the new type StaticBigInt to the standard library.

Protocol Oriented Programming(POP): A Beginner Guide

Protocol Oriented Programming (POP) is a programming paradigm that emphasizes the use of protocols to define interfaces between components in a software system. It is a popular approach used by Swift developers to build flexible, modular, and reusable code. In this beginner guide, we will explore the key concepts of POP, its benefits, and how to apply it in Swift. What is Protocol-Oriented Programming? Protocol-oriented programming is a programming paradigm that emphasizes the use of protocols to define interfaces between different components in a software system. It is based on the idea that the behavior of a type is more important than its inheritance hierarchy or implementation details. In protocol-oriented programming, protocols are used to define the behavior that a type should conform to. A protocol is a set of methods and properties that define a particular behavior. Types that conform to a protocol provide implementations for these methods and properties, which allows them to interact with other types that also conform to the same protocol. Protocol-oriented programming also emphasizes the use of value types, which are types that are copied when they are assigned or passed as arguments. This contrasts with reference types, which are passed by reference and…

Key takeaways from ‘Clean Code’ as an iOS Developer

Confession time – I’m not the greatest reader. When it comes to technical books, I tend to take my sweet time to really digest everything. That’s why when I was knee-deep in my M.Sc. studies, it took me a while to plow through “Clean code – A handbook of Agile software craftmanship” by Robert C. Martin. But boy, am I glad I did. It’s been years since I read it, but I still credit this book as the biggest influence on my code-writing style. Sure, it was originally geared towards Java developers, but as an iOS whiz, I still found it incredibly insightful. One thing that really stood out to me about this book was how down-to-earth and practical it was. It wasn’t just a bunch of theoretical mumbo-jumbo – the author included plenty of real-world examples to really drive his points home. And unlike some other books, it acknowledged that writing code isn’t always a smooth process. We can’t expect to write perfect, clean code on the first try – it’s a journey that takes time and effort. But with the right mindset and approach, we can get there eventually. As an iOS developer, I soaked up a ton…

iOS App Life Cycle – Scene-based life-cycle events for iOS 13+

iOS app development is a constantly evolving field, with each new release of the operating system introducing new features and capabilities. One of the most significant changes in recent years has been the move towards a scene-based life cycle model for iOS apps. This new model, which was introduced in iOS 13, has important implications for developers, particularly those who are building complex, multi-window apps. In this blog post, we will explore the iOS app life cycle in depth, focusing specifically on the scene-based model introduced in iOS 13+ and clear up some confusions at the end. What is the iOS App Life Cycle? The iOS app life cycle refers to the set of events that occur from the moment a user launches an app to the moment they close it. These events include things like app launch, backgrounding, foregrounding, and termination. Prior to iOS 13, the app life cycle was based on a single window. This meant that when a user opened an app, they were presented with a single window that contained all of the app’s functionality. When the app was backgrounded or terminated, the entire app was suspended or closed. What is the Scene-Based Life Cycle Model?…

Exploring Gang of Four Patterns in iOS Development

iOS app development has come a long way since the first iPhone was released in 2007. Today, there are millions of iOS apps available for download on the App Store, and developers are constantly looking for ways to create more efficient, scalable, and maintainable applications. One approach to achieving this is by leveraging the Gang of Four (GoF) design patterns. The GoF design patterns, which were introduced in the book “Design Patterns: Elements of Reusable Object-Oriented Software,” provide a set of solutions to common software design problems. What is GoF? The “Gang of Four” (GoF) is a term used to refer to the four authors of the book “Design Patterns: Elements of Reusable Object-Oriented Software,” which is a seminal work in the field of software engineering. The four authors are Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, and they are all experts in the field of object-oriented design and programming. The book, which was published in 1994, presents 23 design patterns that are commonly used in software development. These patterns describe solutions to recurring problems that arise in software design, and they help developers create flexible and maintainable software. The Gang of Four’s book has had a significant…

Curated Swift Tips (with Code Animation)

Swift is a powerful programming language that has become the go-to choice for iOS developers since its release in 2014. Swift has a clean syntax, offers better performance than its predecessor Objective-C, and allows for safer coding with its strong typing system. If you’re an iOS developer, there’s a good chance you’re already familiar with Swift. In this blog post, we’ll take a look at some curated tips for Swift in iOS development and the benefits they bring. Use Optionals One of the most powerful features of Swift is optionals. Optionals allow for a variable or constant to contain either a value or nil. This is particularly useful in iOS development because it allows for more robust handling of data. When working with APIs, for example, you may receive data that is missing a particular field. Using optionals allows you to handle this situation without crashing your app. Guard and if let statements Guard and if let statements are powerful tools for handling optionals. Guard statements allow for early exits from a function if a condition isn’t met. If let statements allow for safely unwrapping an optional and using its value if it’s not nil. Both of these statements can…

Deep Linking in iOS App: Maximizing User Retention

In today’s digital landscape, app developers face a number of challenges when it comes to retaining users. One key strategy for improving user retention is deep linking, which allows developers to create a more seamless and engaging user experience. In this post, we’ll explore the benefits of deep linking for iOS apps and provide strategies for maximizing user retention with this powerful tool. What is Deep Linking? Deep linking is a way of linking to a specific piece of content within an app. Unlike traditional links, which simply open an app, deep links take users to a specific page within an app, providing a more personalized and streamlined experience. A deep link is a specific type of hyperlink that takes a user directly to a specific page or feature within an app, rather than just opening the app itself. Deep links are important for iOS app development because they improve user experience by providing a quick and seamless way to access specific content within an app. Deep linking is particularly useful for mobile apps, where users often have limited attention spans and little patience for navigating through menus and screens. By providing a direct link to specific content, deep linking…

SOLID Principles for iOS Developers: A Comprehensive Guide

SOLID is a set of design principles that aim to make the software more modular, maintainable, and extensible. In the context of app/software development, here is a brief overview of each principle: Many people have a hard time understanding and remembering the SOLID Principles. However, I can simplify and rephrase them in a way that will make it easier for you to remember and explain them to others. The explanation for my 10 Years Old Nephew SOLID Principles are a set of rules that help people write really good computer programs. Just like how we need to follow some rules to build a strong and sturdy house, we need to follow some rules to build good computer programs that work well. The SOLID Principles are named after each of the letters in the word “SOLID”, which stands for: By following these rules, we can make sure that our computer programs are easy to understand, easy to change, and work really well. As an iOS Developer, Why should you learn SOLID principles? As an iOS developer, learning the SOLID principles is crucial to becoming a better programmer and developing maintainable, scalable, and extensible software. Here are a few reasons why you…

Migrating from UIKit to SwiftUI – Workable Strategies

The introduction of SwiftUI has brought a fresh, new look to iOS app development. With its declarative syntax and improved performance, it’s no wonder that many developers are eager to make the switch. However, migrating from UIKit to SwiftUI can be a challenging process, especially if you have a large, complex app. In this blog post, we’ll discuss some workable strategies to help make your migration to SwiftUI as smooth as possible. Is it time for your team to move to SwiftUI? Ultimately, the decision to move to SwiftUI should be based on a careful evaluation of the unique needs and circumstances of your team and project. When to migrate existing apps from UIKit to SwiftUI from a product owner/manager perspective? From a product owner/manager perspective, migration only makes sense if it provides a long-term benefit. Truth be told, In the short term, migration to SwiftUI will not bring major value to the app. From a product owner/manager perspective, it’s advisable to migrate existing apps from UIKit to SwiftUI when: It’s important to consider factors such as app complexity, development resources, and budget before making a decision to migrate. Is SwiftUI production ready? Yes. Some apps like Bumble and Uber…

How A/B Testing is Transforming iOS App: From Guesswork to Growth

In today’s digital landscape, mobile apps are an essential part of how we live and work. However, developing and maintaining a successful mobile app is no easy task. With so many different devices, platforms, and user preferences to consider, it can be challenging to know which features and designs will resonate with your target audience. Traditionally, mobile app development has relied on guesswork and intuition to make design and feature decisions. However, with the advent of A/B testing and data-driven decision making, this is no longer the case. By selectively enabling and disabling features, and testing different variations of these features, developers can gain valuable insights into what works and what doesn’t, and roll out changes to the app in a controlled and incremental manner. In this blog, we’ll be diving into the world of iOS A/B testing, exploring the benefits it can bring to your app and the users who use it. We’ll also be sharing tips and best practices for how to implement A/B testing in your iOS app, as well as tools and frameworks that can help you get started. Whether you’re a seasoned iOS developer or new to the world of app development, this blog will…

Team Efficiency and Learning: Strategies for Making the Most of Slack Days

Slack days are those days when you have free time or a break in your schedule. Slack days can be a great opportunity to focus on learning and improvement. However, it can be difficult to know how to make the most of your free time, especially when you’re part of a team. In this post, we’ll explore some strategies for using slack days to boost team efficiency and learning. What is Slack day? “Slack day” typically refers to a day when you have free time or a break in your schedule. To maximize a slack day for learning, you could set specific learning goals for yourself and make a plan to achieve them. For example, you could choose a subject you want to learn more about and set aside time to read a book or take an online course on the topic. Additionally, you could use the time to practice skills or work on projects related to your goals. It’s also important to take breaks and give your mind time to rest, so be sure to schedule in some leisure activities as well. My company does not offer slack day. How could I propose this to my managers? If your…

Maximizing Team Efficiency: Delegation Techniques for iOS Staff Engineer

Work delegation is the process of assigning tasks and responsibilities to others to complete. As a staff iOS engineer, you would likely be responsible for leading a team of developers and managing the development of iOS projects. The amount of delegation you do would depend on the size of your team, the complexity of the project, and your role within the organization. As a staff iOS engineer, you would likely be responsible for: In order to be an effective leader, it is important to strike a balance between delegating tasks and maintaining control over the project. It is also important to trust your team members and give them the autonomy to complete their tasks while still providing guidance and support as needed. As an iOS staff engineer, it is important to have strong delegation skills in order to effectively lead your team and manage projects. Delegation can help you to maximize the efficiency and productivity of your team, while also providing opportunities for team members to learn and grow. However, delegation is not always easy and it is important to know the right techniques to use in order to achieve the desired results. Here are some key delegation techniques that…

Mastering GeometryReader in SwiftUI

The GeometryReader is a SwiftUI view that allows you to read the size and position of its parent view. It can be used to create layout that adapts to changes in the parent view’s size and position. The GeometryReader is a very important concept in SwiftUI because it allows you to create responsive and adaptive layouts that adapt to different screen sizes and orientations. It provides a way to read the size and position of its parent view and use that information to create a layout that adapts to changes in the parent view’s size and position. With the GeometryReader, you can create layouts that involve relative positioning and sizes, which is essential for creating user interfaces that work well on a wide range of devices and screen sizes. Additionally, the GeometryReader can be used to create dynamic animations that depend on the size and position of the parent view. This allows you to create animations that are sensitive to the layout and size of the parent view, which can greatly enhance the user experience. Furthermore, GeometryReader allows you to create layout that depend on the position of the parent view. This is useful in situations where you want to…

Xcode Cheat Sheet for SwiftUI – Efficiency Hack

Master These Keyboard Shortcuts for Increased Productivity SwiftUI is a powerful tool for building user interfaces on Apple platforms, and one of the ways to make the most of it is by using keyboard shortcuts. Increase your productivity when coding with Xcode and SwiftUI by mastering these essential keyboard shortcuts. Learn how to navigate, edit, and preview faster with this efficiency hack. Here are some of the most useful shortcuts that will help you work faster and more efficiently in SwiftUI: Quick documentation Option + Click (⌥ Click) This shortcut opens the quick documentation for the selected element. Resume the preview / Refresh the preview Option + Command + P (⌥ ⌘ P) Toggle Show/hide the preview Option + Command + return (⌥ ⌘ ↩) Change SwiftUI preview devices/destination Control + Shift + 0 (⌃ ⇧ 0) Navigate to next/previous preview destination Control + Shift + Command + [ (⌃ ⇧ ⌘ [) Control + Shift + Command + ] (⌃ ⇧ ⌘ ]) Open SwiftUI library of controls or modifiers This shortcut opens the SwiftUI library, which is a useful tool for finding and inserting UI elements. Shift + Command + L (⇧ ⌘ L) Shift + Command + […

Data-Driven Decisions: How Analytics Shapes the Future of Mobile Apps

In today’s digital age, mobile apps have become an integral part of our daily lives. From shopping and entertainment to banking and healthcare, mobile apps have revolutionized the way we interact with the world around us. However, with the constant evolution of technology and the increasing competition in the mobile app market, it’s more important than ever for developers to understand how users interact with their app and make data-driven decisions about feature development and user engagement. This is where analytics comes in. Analytics is the process of collecting, analyzing and interpreting data to gain insights into user behavior. By tracking key metrics such as app usage, user engagement, and revenue, mobile app developers can gain a deeper understanding of how users interact with their app and identify areas for improvement. This information can be used to optimize the user experience, increase user engagement and retention, and ultimately drive revenue growth. One of the biggest advantages of analytics is that it allows developers to make data-driven decisions. Instead of relying on assumptions or gut feelings, developers can use analytics data to identify patterns and trends in user behavior and make informed decisions about how to improve the app. This can…

Pair Programming Culture in Mobile App Team

Pair programming is a technique where two developers work together on the same codebase, with one person typing and the other person reviewing and providing feedback. It can be a valuable tool for improving the quality of code, sharing knowledge, and increasing productivity. Mobile app development is a complex process that involves many different skills and technologies, and pair programming can be particularly beneficial for mobile app developers for a few reasons: Benefit of pair programming culture Pair programming culture can be beneficial for a mobile app team in several ways: Mentoring junior developers through PP Pair programming can be an effective way for senior iOS developers to mentor junior developers. Here are a few ways in which pair programming can support mentoring: Overall, pair programming can provide a hands-on, collaborative learning experience for junior iOS developers, helping them to develop the skills and knowledge they need to become successful iOS developers. Tips for improving pair programming Here are a few tips for improving pair programming: By following these tips, you can improve your pair programming experience and work more effectively with your partner. Remember that, pair programming is a continuous learning process, and it is always possible to improve…

How to Send Email in SwiftUI

Sending an email in SwiftUI can be done using the MessageUI framework. The MessageUI framework provides a simple and easy-to-use interface for sending emails in iOS apps. Here’s an example of how to send an email in SwiftUI: Now add a button action to send the email:

Building a Pet Project that Puts Your Skills on Display

iOS development is a highly sought-after skill in today’s job market, and building a pet project is a great way to demonstrate your abilities and gain experience in the field. Whether you are a beginner or an experienced developer, creating a pet project can help you to improve your skills, learn new techniques, and showcase your talent to potential employers. In this blog post, we will discuss some tips for starting an iOS pet project that puts your skills on display. Importance of a Pet Project Described here Acing iOS Interview with Confidence What is a pet project? A pet project is a personal project that is undertaken by an individual outside of their regular work or study. It is usually a project that the person is passionate about and wants to develop for their own enjoyment or to gain experience in a specific area. Pet projects are often completed on a voluntary basis and in one’s own time, unlike work projects that are done as part of a person’s job or coursework. One of the main benefits of a pet project is that it allows individuals to develop their skills and gain experience in a specific area. For example,…

Call Customer Care Button in SwiftUI

In today’s fast-paced world, customer service is more important than ever. As a business, it’s essential to provide your customers with a seamless and efficient experience when they need help. One way to do this is by implementing a “Call to Customer Care” feature in your iOS app. SwiftUI is a powerful tool for building user interfaces on iOS, and it’s perfect for creating a button that allows users to call customer support with just a tap. In this blog post, we’ll show you how to create a call to customer care button in SwiftUI. First, you’ll need to create a new SwiftUI View that will contain the button. Inside the view, you’ll add a Button element and give it a title, such as “Call Customer Care.” Next, you’ll need to add an action to the button that makes the phone call. You can do this using the UIApplication.shared.open() method, which opens a URL with the phone number of your customer support. Here’s an example of what the code for the view might look like: In this example, the button will open the phone app and dial the number “1234567890” when tapped. You can replace this number with the actual…

How to implement the force update app in Swift and SwiftUI?

In today’s fast-paced world, keeping your mobile app up-to-date is crucial for ensuring its functionality and security. A force update feature is an effective way to ensure that your users are always running the latest version of your app. In this blog post, we’ll explore how to implement a force update feature in a Swift app and the benefits it brings to your users and your business. Implementing a force update feature in a Swift app is relatively simple. The basic idea is to create a version endpoint on your server that returns the current version of your app. This endpoint should be called by the app every time it starts. In the app, you can create a function that calls the version endpoint and compares the version returned by the server with the current version of the app. If the server version is higher, prompt the user to update the app. In Swift There are different ways to implement a force update feature in a Swift app, but one common approach is to use a combination of server-side logic and client-side code. Here is some sample Swift code that demonstrates the basic idea: In SwiftUI In the above example,…

Cracking The Culture Fit Interview

A culture fit interview is a type of interview in which a candidate’s compatibility with an organization’s values, norms, and working style is evaluated. The goal is to determine whether the candidate would be a good “fit” for the company culture and work well with existing team members. This type of interview typically includes questions about the candidate’s work style, values, and past experiences, and may also include behavioral-based interview questions. Culture fit interview – Not for the HM only Culture fit interviews are important for both the applicant and the interviewer/hiring manager because they help ensure a good match between the candidate and the organization. For the applicant, a culture fit interview is important because it helps them determine whether the organization is a good match for their skills, values, and work style. If the applicant is a good fit for the organization’s culture, they are more likely to be happy and successful in the role. This can lead to a better work-life balance, higher job satisfaction, and career growth opportunities. For the interviewer, a culture fit interview is important because it helps them determine whether the candidate is a good fit for the organization’s culture and will work…

Tips for conducting scrum daily in a big team

Scrum is a popular framework for managing and completing complex projects. It’s particularly well-suited for small teams, as it provides a structure for collaboration and communication. What is the recommended size for a scrum team? For large enterprise projects, the ideal Scrum team size is 7 people (product owner, scrum master, and 5 developers).  Why do we have a big team with Android and iOS engineers in the first place? For a small organization features are developed simultaneously for both platforms. In most cases, organization does not have enough resources to run two teams. To conduct better status update meeting or all-over collaboration(Managing Inter Team & Intra Team Dependency), we may come up with the next question: For a small organization, do we need to separate the Android and the iOS teams? For a small organization, it depends on the resources and goals of the organization. Ultimately, it depends on the resources, goals, and priorities of the organization. If the organization has enough resources and wants to develop highly optimized apps for both platforms, it may make sense to separate the teams. If the organization wants to make the most efficient use of resources and release the app on both platforms simultaneously,…

Managing Inter Team & Intra Team Dependency

In any organization, it is common for different teams to work on different projects or tasks that are interdependent on each other. In this scenario, it is important to understand the difference between inter-team dependencies and intra-team dependencies. Inter-team dependencies refer to the dependencies that exist between different teams within an organization. For example, team A may be working on a project that requires the assistance of team B to complete. In this case, team A is dependent on team B to complete their task. Intra-team dependencies, on the other hand, refer to the dependencies that exist within the same team. For example, within team A, one member may be working on a task that is dependent on the work of another member. In this case, the team member who is dependent is intra-dependency on the other team member. Managing inter-team dependencies is crucial for the successful completion of a project. Clear communication and proper planning are essential to ensure that all teams understand their roles and responsibilities. It is also important to set realistic timelines and establish a clear chain of command to ensure that all dependencies are met in a timely manner. Here are a few ways to…

Enable and Disable Button in SwiftUI

In this tutorial, we will learn how to create an enable/disable button in SwiftUI. In the ContentView.swift file, we will create a button and a state variable that will determine whether the button is enabled or disabled. In the above code, we have created a button with a text “Button” and a state variable isButtonEnabled. The disabled modifier is used to disable the button based on the value of the state variable. The exclamation mark before isButtonEnabled negates the value, so when isButtonEnabled is true, the button is enabled, and when it is false, the button is disabled. Next, we will add a toggle switch that will allow us to enable or disable the button. In the above code, we have added a toggle switch with a text “Enable button” and a binding to the isButtonEnabled state variable. This means that when the toggle switch is turned on, the value of isButtonEnabled is set to true, and the button becomes enabled. When the toggle switch is turned off, the value of isButtonEnabled is set to false, and the button becomes disabled. Disable multiple views It is possible to enable and disable multiple buttons and views that are located within the…

@escaping in Swift

In Swift, the @escaping keyword is used to indicate that a closure (a block of code that can be passed around and executed at a later time) may be called after the function it was passed to has completed execution. When a closure is passed as an argument to a function, it is captured by that function and can only be executed while the function is still running. This is known as a non-escaping closure. However, if the closure may be executed after the function has completed, it is called an escaping closure. To indicate that a closure is escaping, you can add the @escaping keyword before the parameter type in the function definition. For example: In this example, the performTask function takes a single argument, a closure of type () -> Void, and it marked as @escaping. This means that the closure passed as an argument to this function may be executed after the function has completed. It is important to note that when you mark a closure as @escaping, you are responsible for ensuring that the closure is executed at some point in the future, otherwise it will result in a memory leak. You can also use @escaping…

Phantom types in Swift

Swift is a powerful and versatile programming language that is widely used for developing iOS and macOS apps. One of the many features that sets Swift apart from other languages is its support for “phantom types.” In this blog post, we’ll take a closer look at what phantom types are and how they can be used to improve the safety and maintainability of your code. At a high level, a phantom type is a type that is used to indicate a specific state or context for a value. Unlike regular types, phantom types do not have any associated data or functionality. Instead, they act as a sort of “tag” or “label” that can be used to enforce certain constraints or invariants in your code. One of the most common use cases for phantom types is to indicate the state of a value. For example, imagine you are building a game and you want to keep track of the player’s current health. You might define a Health struct with an associated phantom type HealthType, which can have two possible states: “healthy” and “dead.” By using a phantom type, you can ensure that the player’s health can only be set to “dead”…

Asking for an iOS User Review using SwiftUI

Asking for an iOS review within the context of a SwiftUI app is a novel approach to gathering feedback from users. This is an important aspect of fostering a connection with them and obtaining valuable insights that can be used to make ongoing improvements to the app. This type of request is typically presented as a pop-up window when using iOS applications. You may already be familiar with this feature, as it has become a standard practice among iOS app developers. However, with the introduction of SwiftUI, the way in which this request is implemented and presented to users has changed. This new method allows for a more seamless and user-friendly experience, making it easier for users to provide feedback and for developers to gather it. Before the release of SwiftUI 4.0, the only way to request an iOS review was through the use of the StoreKit framework within the UIKit framework. However, with the introduction of SwiftUI 4.0, developers now have access to a new environment variable that allows them to implement this feature in a more efficient and user-friendly way. In a real-world scenario, you will probably want to trigger the review request at an appropriate time, such…

RenameButton in SwiftUI

You may want to include a button labeled “Rename” in your app. Apple now offers a pre-made button called “RenameButton.” You can easily achieve this by the following code:

iOS Interview Guide for UIKit & SwiftUI: Top 30 in 2023

Welcome to our comprehensive iOS Interview Guide for UIKit & SwiftUI! Whether you’re a seasoned developer or just starting out, this guide will help you ace your next interview. We’ve compiled a list of the top 30 questions you’re likely to encounter in a iOS interview, covering everything from UIKit and SwiftUI. With clear explanations and sample answers, this guide will give you the confidence you need to impress your interviewer and land your dream job. So if you’re looking to up your iOS game in 2023, this guide is for you! Can you explain the purpose of UIMenuController in iOS development? UIMenuController is a class in iOS that is used to display a menu of options to the user. It is typically used in conjunction with a UITextView or UITextField to provide options such as copy, paste, and select all. Can you tell me the difference between a UIImage and a UIImageView in iOS development? A UIImage represents an image that can be displayed in an iOS app, while a UIImageView is a UI element that can display an image. UIImageView can be used to display animations, images, and other content. Can you explain the difference between aspect fill…

iOS interview Prep 2023: Mastering Frameworks

Welcome to our iOS interview prep for 2023! In this post, we will be diving deep into the world of iOS development and specifically focusing on mastering the various frameworks that are used to build iOS applications. Whether you are a beginner or an experienced developer, this series will provide you with all the information and resources you need to ace your next iOS interview. From the basics of a common framework and Core Animation to advanced topics such as Core Data and SceneKit, we will cover it all. So, let’s get started and master the frameworks that power iOS development together! What is the purpose of Core Data framework in iOS? Core Data is an object-relational mapping (ORM) framework that allows developers to interact with their data in an object-oriented way. It provides an abstraction layer between the application and the data store, allowing developers to manage and manipulate data while maintaining data integrity and consistency. Combine Framework Interview Questions and Answers Top 30 Combine Framework Interview Questions & Answers 2023 What is the purpose of UIKit framework in iOS? UIKit is a framework that provides a set of tools and interfaces for building user interfaces for iOS applications.…

Top 30 Combine Framework Interview Questions & Answers 2023

Welcome to our blog post on the top 30 Combine framework interview questions and answers for 2023. As the iOS development community continues to evolve, so too do the tools and frameworks that developers use to build their apps. One such framework that has gained popularity in recent years is Combine. In this post, we will provide a comprehensive list of the most frequently asked questions on the Combine framework, along with their corresponding answers. Whether you’re a seasoned iOS developer or just starting out, this post is a great resource to help you prepare for your next interview and master the ins and outs of the Combine framework. So, let’s dive in! What is the Combine framework? The Combine framework is a reactive programming framework introduced by Apple in WWDC 2019. It enables developers to manage and respond to asynchronous events and data streams in a declarative and functional way. What are the main components of the Combine framework? The main components of the Combine framework are Publishers, Subscribers, and Operators. Publishers emit values, Subscribers receive and process those values, and Operators transform the values emitted by Publishers. How does Combine differ from ReactiveCocoa or RxSwift? Combine is a…

Top SwiftUI Interview Questions & Answers 2023

In this blog post, we will provide you with a comprehensive guide on the top SwiftUI interview questions and answers for 2023. SwiftUI is a modern, flexible, and easy-to-use framework for building user interfaces on Apple platforms. It is the future of iOS and macOS app development, and it is becoming increasingly popular among developers. Whether you’re a seasoned developer or just getting started with SwiftUI, this guide is an essential resource for preparing for your next interview. We’ve compiled a list of the most frequently asked SwiftUI questions, along with clear and concise answers to help you understand the concepts and best practices behind the framework. SwiftUI is a modern framework for building user interfaces on Apple’s platforms. It was first introduced at WWDC 2019 and has since become a popular choice for developers looking to build responsive, high-performance apps for iOS, iPadOS, macOS, watchOS, and tvOS. With its declarative syntax and powerful features, SwiftUI allows developers to create beautiful, intuitive user interfaces quickly and easily. As SwiftUI becomes more widely adopted, it’s likely that more and more developers will be interviewed for jobs that require experience with the framework. To help you prepare for your next interview, we’ve…

Top 100 iOS Interview Questions & Answers 2023

Are you preparing for an iOS developer interview and want to make sure you’re well-versed in all the latest technologies and best practices? Look no further than our Top 100 iOS Interview Questions and Answers for 2023. In this comprehensive blog post, we’ve compiled a list of the most commonly asked questions in iOS developer interviews, as well as their corresponding answers. From understanding the difference between a strong reference and a weak reference, to implementing a singleton and creating a custom view, this guide has everything you need to know to impress your interviewer and land that job. Not only will you be able to brush up on your knowledge of core iOS concepts, but you’ll also be exposed to the latest technologies and best practices in the field. So whether you’re a seasoned iOS developer looking for a new opportunity or just starting out in your career, this guide is the perfect tool to help you achieve your goals. What is the difference between an Objective-C class and an Objective-C category? A class is a blueprint for an object, while a category is a way to add methods to an existing class without having to subclass it. What…

Ownership Culture

An ownership culture in a mobile app development team is one in which team members take responsibility for the quality and success of their work, and are committed to delivering high-quality features that meet the project’s goals. An ownership culture is a corporate culture in which employees act as if they own the company, taking personal responsibility for its performance and success. The benefits of an ownership culture include increased employee engagement and motivation, improved performance, and higher levels of customer satisfaction. When employees feel a sense of ownership and responsibility for their work, they are more likely to take initiative and make decisions that benefit the company as a whole. Additionally, an ownership culture can lead to increased innovation and creativity, as employees are more likely to propose new ideas and take risks when they feel a sense of ownership. Ownership Culture in Mobile App Team Ownership culture is important in app development because it helps to ensure that the app is being developed with the user and the company’s best interests in mind. When the development team feels a sense of ownership over the app, they are more likely to be invested in its success and to put…

Mastering iOS and Android Team Performance: A Key to Successful Mobile App Development

Measuring the performance of an iOS or Android engineering team can be a challenging task, but it is crucial for ensuring the success of a mobile app development project. In this blog post, we will explore some key metrics and methods for evaluating the performance of an iOS or Android engineering team. Deliverables It is essential to track the team’s progress in terms of deliverables. This can be done by setting clear milestones and deadlines for the completion of specific tasks or features. By monitoring the team’s progress against these milestones, you can gain a better understanding of how efficiently the team is working and identify any bottlenecks that may be delaying progress. Measure Lead Time Lead time, also known as Cycle Time, refers to the duration from when a feature is described to when it is implemented in the production environment. It is a key metric that measures the efficiency and effectiveness of your engineering processes. A shorter lead time indicates that your team is able to deliver features quickly and smoothly, while a longer lead time can signal issues such as friction in the development process, lack of clear ownership, or poor communication. One of the main factors…

Strategies for Managing Offshore and Nearshore Teams: Navigating the High Seas of Remote Development

Offshore and nearshore developers can be a valuable resource for companies looking to expand their engineering teams and increase their development capabilities. Offshore and nearshore teams refer to groups of developers or other professionals who are located in different geographic locations than the company they are working for. What are offshore and nearshore teams? An offshore team is typically located in a different country, often in a location with a lower cost of living, which can result in cost savings for the company. The most common location for offshore teams are in Asia, Latin America and Eastern Europe. A nearshore team, on the other hand, is located in a neighboring country or a nearby time zone. This can make communication and coordination easier, as there is less of a time difference to contend with. Benefits of using offshore and nearshore teams include: However, there are also some drawbacks to consider: It’s important to weigh the benefits and drawbacks and carefully consider the specific needs of a project before deciding to work with offshore or nearshore teams. Having a clear communication plan, regular meetings, and a dedicated point of contact can help to mitigate some of the challenges that can arise…

Synchronise iOS and Android Teams

As mobile app development continues to grow in popularity, it’s becoming increasingly common for teams to work on both iOS and Android versions of the same app. However, coordinating the efforts of two separate teams working on different platforms can be a challenge. In this blog post, we’ll explore some strategies for synchronizing iOS and Android teams to ensure that the app is consistent and of high quality across both platforms. Establish clear communication channels First and foremost, it’s important to establish clear communication channels for both teams to use. Whether it’s email, instant messaging, or project management tools, having a consistent way for teams to share information and updates is crucial. Additionally, it’s helpful to define a shared development process, such as Agile or Scrum, to ensure that both teams are working in a consistent manner and that there is a clear understanding of the development process. Define a shared development process Establish a shared development process that both teams will follow, such as Agile or Scrum. This will help ensure that both teams are working in a consistent manner and that there is a clear understanding of the development process. Schedule regular meetings Regular meetings are also an…

Refine your OOP skills for iOS Development

Object-oriented programming, or OOP, is a popular programming paradigm that is widely used in iOS development. As an iOS developer, understanding and utilizing the principles of object-oriented programming (OOP) is crucial to building robust and maintainable applications. Whether it’s through encapsulation, inheritance, or polymorphism, OOP provides a powerful set of tools that can help developers create efficient and effective code. In this article, we will explore how OOP can be applied in the context of iOS development and how it can help developers create better, more flexible, and more reusable code. From creating custom classes and objects to utilizing protocols and generics, we will delve into the ways in which OOP can be used to take your iOS development to the next level. So, let’s dive in and see how OOP and iOS make a match made in code! Here are some reasons why OOP is important in iOS development: Do I need to learn OOP as an iOS developer? Yes, you will need to learn Object-Oriented Programming (OOP) to become an iOS developer. OOP is a programming paradigm that is widely used in iOS app development. OOP provides a way to organize code into reusable, modular components that are…

Cracking the Behavioral Interview

Behavioral Interview is a type of interview that focuses on the candidate’s past behavior and experiences in order to predict their future behavior in similar situations. This type of interview is important for all type of companies specially for FAANG (Facebook, Amazon, Apple, Netflix, and Google) interviews because these companies are looking for candidates who have a track record of success and have demonstrated specific skills and abilities in their previous roles. Behavioral interviews are a way for the company to get a sense of how the candidate has handled certain situations in the past and how they may handle similar situations in the future. This helps the company make a more informed decision about whether the candidate is a good fit for the role and the company culture. Behavioral interviews are a popular way for employers to evaluate candidates for a position. As a mobile software engineer, it’s important to be prepared for this type of interview and to understand what the interviewer is looking for. If you never face any behavioral round, I have some common questions that I was asked by Hiring managers from different companies: Please note that these are common behavioral interview questions and the…

Custom Activity Ring in SwiftUI

Activity rings are a feature of the Apple Watch that track a user’s physical activity throughout the day. There are three rings: one for Move, one for Exercise, and one for Stand. I will create a basic custom activity ring for the beginner and go deep by implementing multi rings. In this blog post about creating an Activity ring in SwiftUI will cover the following topics: A Super Basic Custom Activity Ring Here is an example of how you might create an activity ring in SwiftUI: This creates a ring-shaped view using the Circle view, with the trim(from:to:) modifier used to create the appearance of a ring with filled and unfilled sections. The stroke modifier is used to apply a green color and a line width of 20 to the ring. The frame modifier is used to set the size of the ring to 200×200 pixels. The rotationEffect is used to rotate the ring -90 degrees to start the animation from the top. The Text view is used to display the current progress as a percentage, and the onTapGesture is used to increment the progress by 0.1 on each tap and resets the progress back to zero when it reaches…

Building Strong Interpersonal Skills: Essential for Success as a Software Engineer

As a software engineer, your technical skills are important, but they are not the only thing that will determine your success in the industry. In order to excel and advance in your career, it’s also important to develop strong interpersonal skills. These skills can help you build and maintain successful relationships with colleagues, clients, and other stakeholders, and can be the key to success in a fast-paced and constantly evolving industry. One of the most important interpersonal skills for software engineers is the ability to communicate effectively. This includes the ability to explain complex technical concepts to both technical and non-technical audiences, as well as the ability to listen actively and understand the needs and concerns of others. Clear and effective communication can help you build trust and credibility with clients and stakeholders, and can ensure that projects stay on track and on budget. Collaboration is another essential interpersonal skill for software engineers. Software development is often a team effort, and the ability to work well with others is essential for success. Strong collaboration skills can help you build stronger teams and ensure that projects are completed on time and to a high standard. Collaboration is a key skill for…

Acing iOS Interview with Confidence

Acing an iOS interview can be a daunting task, especially with the fierce competition for positions at prestigious companies. However, with the right preparation and mindset, you can increase your chances of success and walk into that interview with confidence. Competition for positions at prestigious companies can be super tough, with thousands of applications from top engineers worldwide. Acing an iOS developer interview can be intimidating but here are a few tips to help you prepare: Brush up on your fundamentals: Make sure you have a solid understanding of Swift, iOS development concepts, and iOS frameworks.Know your portfolio: Be able to speak about the projects you’ve worked on and be ready to answer questions about your approach and problem-solving skills.Familiarize yourself with the company and its products: Research the company’s values, goals, and what they look for in iOS developers.Prepare for technical questions: Review common iOS technical interview questions and have answers ready.Show your enthusiasm: Demonstrate your passion for iOS development and your excitement to work for the company. Key Insights Proficiency for iOS Interview First and foremost, having a strong portfolio of client-side development projects is essential. This portfolio should showcase your technical proficiency in problem-solving and iOS development,…

What should you look for when screening resumes?

When screening resumes, it’s important to keep in mind that a resume is a person’s self-promotion document. It’s designed to showcase their skills, experience, and qualifications in the best light possible. However, as an employer, it’s your job to sift through the resumes to find the best fit for the position you’re trying to fill. Here are a few things to look for when screening resumes: By keeping these things in mind, you will be better equipped to identify the best iOS developer from a resume.

Balancing Engineering Limitations with Customer Requirements

Balancing engineering limitations with customer requirements is a crucial aspect of product development. It involves finding a compromise between what is technically feasible and what the customer wants or needs. In this blog post, I will discuss some strategies for finding this balance. Mobile app development teams often face a variety of limitations, but some of the most common include: First and foremost, it’s important to have a clear understanding of both the engineering limitations and the customer requirements. This means gathering detailed information about the technical constraints of the project, such as budget, materials, and production processes, as well as gathering detailed information about the customer’s needs and wants, such as desired features, aesthetics, and price point. Once you have a clear understanding of both the engineering limitations and the customer requirements, it’s time to start finding a compromise. One strategy is to prioritize the customer’s needs and wants and find ways to work around the engineering limitations. This might mean using alternative materials or production processes, or looking for ways to simplify the design. Another strategy is to involve the customer in the product development process. By working closely with the customer and getting their input and feedback…

Acquiring the Right Talent for the Software Engineering Team

Acquiring the right talent for your software engineering team is crucial for the success of your projects and the overall performance of your organization. The software engineering industry is highly competitive, and finding the right talent can be a challenge. Here are some of the common challenges that organizations face when trying to acquire the right talent: However, by following the right approach, you can increase your chances of finding and hiring the right talent to help your team succeed. First and foremost, it’s important to clearly define the role and the skills and qualifications required for the position. This will help you attract the right candidates and identify those who are not a good fit for the role. Additionally, use a combination of recruiting methods, including online job postings, social media, and employee referrals. This will help you reach a wider pool of candidates and increase the chances of finding the right talent. Once you’ve identified some potential candidates, it’s important to use technical screening methods such as coding exercises, online assessments, and technical interviews to evaluate the candidate’s technical skills and knowledge. This will help you identify the most qualified candidates. Additionally, look for candidates who will fit…

Dealing with Lone Wolf Software Engineer

“Lone wolf” software engineer refers to the challenges and limitations that an individual developer may face when working independently on a software project. These challenges can include a lack of resources, support, and collaboration, as well as difficulty staying motivated and on track with the project goals. Additionally, a lone wolf developer may have difficulty keeping up with the latest technologies and best practices, and may be less able to handle complex or large-scale projects. To address these challenges, it is often recommended that developers work in a team or join a community of other developers to share knowledge, resources, and support. In any software development team, it’s important to identify and address any potential issues that may arise. One common problem that can occur is the presence of a “lone wolf” developer. This is an individual who prefers to work independently, rather than as part of a team. While this approach may seem harmless at first glance, it can lead to a number of problems that can negatively impact the overall performance of the team. The first step in identifying a lone wolf developer is to look for signs of isolation. This can include a lack of participation in…