Pinned

About Swiftos

Want to become a senior iOS Engineer but don’t have time to read/watch long coding tutorials? I’m here for you. I create iOS development tutorials weekly. I believe that success is a daily accumulation, and I understand that your time is valuable, so I’ll make each tutorial between one to two minutes to read. Are you feeling excited? Follow me on https://www.patreon.com/Swiftos and start advancing your iOS development skills :)

1 min read

1 min read

About Swiftos

Swiftos

One-Minute iOS Development Tutorials

View list

4 stories

2 days ago

Swift: CaseIterable

Imagine if you have dozens of enum cases and want to get them on a list. Make the enum conform to CaseIterable. enums that conform to the CaseIterable protocol have an allCases property that returns all enum cases on a list.

I OS App Development

1 min read

I OS App Development

1 min read

Swift: CaseIterable

Imagine if you have dozens of enum cases and want to get them on a list. Make the enum conform to CaseIterable. enums that conform to the CaseIterable protocol have an allCases property that returns all enum cases on a list.

5 days ago

Swift: Array.count Vs String.count

Many developers think that Array.count and String.count are the same. Although they are used for the same purpose(getting the sequence length), how they get the length makes a big difference. Array conforms to RandomAccessCollection; accessing the end of the indices takes O(1). Therefore, the time complexity of Array.count is O(1) …

I OS App Development

2 min read

I OS App Development

2 min read

Jan 27

Safe Bounds Check for Collection

Safety is always essential, especially when you are working in a team. What will happen if you run the following code snippet?

I OS App Development

2 min read

I OS App Development

2 min read

Jan 26

Difference Between for Loop and forEach

In Swift, to iterate a collection such as an array, there are two common ways to accomplish that. One is to use a for loop; the other is to use the forEach function. Can you tell what will be printed out in these two code snippets? With forEach:

I OS App Development

2 min read

I OS App Development

2 min read

Published in Geek Culture

·Jul 10, 2022

What Are Actors in Swift 5

Hi iOS devs, Multithreading is a very important topic in iOS development. Throughout my career, I was asked to solve data race problems during many technical interviews. Data race means multiple threads accessing or mutating the same data synchronously. Since the operations are different threads, there are no orders on…

I OS App Development

3 min read

I OS App Development

3 min read

Jan 17, 2022

Three Things I Do Everyday to Create Time

Hi folks, I’m a full-time iOS developer, and I have two kids to take care of. In addition, I also publish articles, develop personal apps, etc. People, who know me sometimes ask, “How do you have enough time to do all that you do?” Well, we all have the same…

Productivity

6 min read

Three Things I Do Everyday to Create Time

Productivity

6 min read

Published in Geek Culture

·Sep 20, 2021

Swift 5.5: Async/Await

Hi In WWDC 2021, Apple introduced async functions to Swift 5.5. Async functions allow us to run complex tasks asynchronously, just like some other programming languages, such as JavaScript. Asynchronous functions must be defined with the async keyword, to call asynchronous functions, we need to use the await keyword. Why do we need asynchronous functions? Our…

I OS

3 min read

I OS

3 min read

Published in Geek Culture

·Sep 18, 2021

SwiftUI: StateObject and ObservedObject

Hi, SwiftUI is all about states. Common property wrappers are State, EnvironmentObject, AppStorage, StateObject and ObservedObject, etc. Views in SwiftUI are structs. Structs aren't designed to be mutatable. Initially, once a view is rendered, it won’t be changed. But, in most cases, views contain dynamic data. They will be updated…

Xcode

3 min read

Xcode

3 min read

Published in Geek Culture

·Sep 17, 2021

Swift 5: UIKit is Dying-Part 2.

Hi, From the feedback I’ve gotten already, it looks like readers really liked my previous story, Swift 5: UIKit is Dying-Part 1. People are afraid of changes. When Swift first came out, people didn’t believe in it. People are generally fearful of change. But now, after a few years, everyone…

Xcode

5 min read

Xcode

5 min read