Published in Better Programming·PinnedHow to Use Web3.swift in iOSFetch data from the Ethereum blockchain using Swift — Ever since the introduction of the Ethereum blockchain in the year 2015, it has revolutionized the entire software development industry. It is the first blockchain that has smart contract capability, allowing developers to create and deploy decentralized applications (dApps) that interact with the Ethereum blockchain. Nowadays most dApps are web-based…Programming5 min read
Published in Better Programming·PinnedHandling Actor Reentrancy Problem in SwiftKnow how to safely run concurrent Swift code — When the first time I saw the WWDC presentation about actors, I was thrilled with what it is capable of and how it will change the way we write asynchronous code in the near future. …Swift6 min read
Published in Better Programming·4 days agoUnderstanding the “Some” and “Any” Keywords in Swift 5.7No more confusion! — The some and any keywords are not new in Swift. The some keyword was introduced in Swift 5.1 whereas the any keyword was introduced in Swift 5.6. In Swift 5.7, Apple makes another great improvement on both of these keywords. …Programming5 min read
Mar 25How to Write Images to Camera Roll in iOSWriting an image to the camera roll is fairly simple in iOS development, but when it comes to detecting when the image has been written to the camera roll, it is not as simple as we think. Surprisingly, Apple does not give us any closure-based APIs that we can leverage…Ios Development4 min read
Published in Better Programming·Mar 1How to Intercept WKWebView Navigation ActionsGives your users a seamless transition experience between web views and native views — When working on a hybrid mobile app, it is extremely important to ensure that our users have a seamless transition experience between web views and native views. One very common technique we can use to provide this kind of experience is by hijacking the WKWebView navigation actions. In this article…Swift4 min read
Published in Better Programming·Jan 12Injecting JavaScript in iOS WebViewsA lesser-known yet super powerful feature of WKWebView — Using a web view to display some frequently updated content such as FAQ is a very common tactic used by most iOS developers. By doing so, developers can easily update the web view content without going through the App Store review process. On the other hand, users will be able…Swift3 min read
Published in Better Programming·Nov 18, 20212 Common Ways to Handle Errors In Swift Task GroupsError handling in task groups — If you have read my previous article, you should know by now how to create a task group, add child tasks to a task group, and gather results from all the child tasks. …Swift6 min read
Published in Better Programming·Oct 27, 2021Understanding Swift 5.5 Task GroupsCreate child tasks and gather results effectively in your iOS modules — Apple introduced task groups in Swift 5.5 as one of the essential parts in the Swift concurrency framework. As the name implies, a task group is a collection of child tasks that run concurrently, and it only returns when all of its child tasks finish executing. In this article, I…Programming5 min read
Published in Better Programming·Oct 7, 2021How Sendable Can Help Prevent Data Races in iOSA quick look at the Sendable protocol — In my previous article, you learned that actors can help us prevent data races by ensuring mutual exclusion to its mutable states. This statement is true as long as we are accessing the mutable states within the actors. …Programming5 min read
Published in Better Programming·Sep 8, 2021Preventing Data Races Using Actors in SwiftSay goodbye to data races — Data races — the worst nightmare of all developers! They are hard to detect, very unpredictable, and extremely difficult to fix. Apple has given developers various toolsets such as NSLock and serial queues to prevent data races from happening during runtime, however, none of them are capable of catching race…Programming6 min read
