Advanced Swift - Fresh Beginning

Cheatsheet for SwiftUI Navigation

How navigation works in SwiftUI often proves to be confusing for new folks. In spite of the apparent attempt by Apple engineers to make app development easier for developers, navigation is one area that is confusing, counterintuitive, and difficult to handle in SwiftUI. In this blog post, I am going

SwiftUI

Extending SwiftUI views beyond the safe area

iOS offers a safe area at the top and bottom of the screen. This safe area prevents content from touching notches present and helps developers place their views within the visible portion of the overall interface. However, there are cases when we want to extend beyond this safe area. For

async-await

async Alternatives and Continuations - Bridging legacy async code with async-await structure (Advanced Swift Topic)

If you haven't yet read couple of my posts that introduce a new async-await construct in Swift, below are the links you can follow to know more about itHow to use async/await in Swift using ExamplesUsing async/await APIs in Swift 5.5. Examples of using async await and

low level debugging

Low-level Debugging on iOS using lldb

WWDC16 Session 417 offered a lot of insight into low-level iOS app debugging applicable for both Objective-C and Swift codebase. In this blog post, we will go over some of the improvements offered by new lldb features and see how you can use them for your own personal or work-related

web socket

How to use WebSockets on iOS using Swift

From Wikipedia, WebSocket is a computer communications protocol, providing full-duplex communication channels over a single TCP connection. Although very useful on Web using JavaScript, we don't use it a lot on iOS platform. From MDN, The WebSocket API is an advanced technology that makes it possible to open a two-way

Swift 3.0

A nice little optimization trick for Swift arrays

Swift arrays are value types that allow dynamically storing the arbitrary numbers of values without knowing the exact count at the beginning. Although this is great when you don't know the exact number of elements you're going to store in advance, you can use a nice optimization technique when you

iOS

[iOS][Swift] Adding timer on reusable UITableViewCells

A few months ago I started the job search and in my very first take-home assignment, I was asked to implement a feature to display timer on UITableViewCell. The use-case was we were going to fetch Bitcoin prices every 60 seconds and the cell would display how long it is

UITableView

Best practices for configuring the table view cells on iOS with Swift

Many times, iOS developers utilize UITableView and UITableViewCell subclasses and sometimes UICollectionView variants to create beautiful views. But it could be tricky when you're writing it for the first time. It's important to know the best practices on how to configure these cells. In this post, I am going to

Async

Async / Await in Swift

Apple introduced the concept of async/await in Swift 5.5 and announced it in the WWDC21 session. Today, we are going to see it in action and how you can leverage it to write readable async code in your app. Please note that async/await is only available in

ARC

Deep dive into Swift memory management with ARC

It's been a while since my last post. For past few months I was busy with work, personal life and lot of things happening outside it so couldn't really commit to writing another article. However, I am back now and going to write about Swift and its memory management quirks.

NSNotifications

Implementing custom NotificationCenter in Swift

NSNotificationCenter is a classic API on iOS. It's used so that classes can register for notifications by name and execute the function/block whenever the notification with same name is fired somewhere else in the project. Today, we will see how to implement NSNotificationCenter API in Swift from scratch. Here

UICollectionView

Tutorial - Creating Programmatic UICollectionView in Swift

Creating a UICollectionView could be stressful - As compared to dealing with UITableView. But things don't have to be this way for so long. Every time I have to add a CollectionView in the app, I end up spending long time trying to figure out what did I do last

UITableView

How to add HeaderView and FooterView to UITableView

Recently I was playing with support to add header and footer view to UITableView. However, task wasn't as easy as adding UITableViewCells to the table view. Header and Footer views acts slightly different than regular table view cells. Today we are going to see how to add self-sizing (self-sizing is

Minesweeper

Rewriting a Minesweeper - Part 3

Welcome to part 3 of the Minesweeper game. Today we will see logic behind some of the core and bonus features in the game. Highlighting tilesTiles highlighting is triggered when user taps on one of the tiles which is not mine. This triggers a sort of chain reaction to uncover

Minesweeper

Rewriting a Minesweeper - Part 2

Happy new year to all. I guess as I am getting old, I am not feeling enthusiastic enough about new years. There is one thing I am excited about though. Writing a rewriting Minesweeper game in Swift. Yesterday was quite a productive day in terms of my progress. Here's the

Minesweeper

Rewriting a Minesweeper - Part 1

I am going to being this series of post on how I found my 4 year old Minesweeper game project written in Objective-C and process to start converting it into Swift. My goals for this project are as follows: Make sure to bring this project in stable state - As

iOS

Creating Custom Operators in Swift with Generics

Swift introduced us to a new era of custom operators. Unlike Objective-C, it allows us to define our own operators and perform operator overloading on existing operators if necessary. We will see both of them in detail in today's article. Custom operators can provide excellent clarity and flexibility down the