Weekly note ✏️
AI showcases just keep coming—week after week. This time, Sam Altman himself took the stage at a major conference, unveiling Agent Builders, the Sora API, and a range of performance-focused features. The AI race is being fueled by massive investments in new chip production, but as the hype escalates, the industry is slowly shifting from blind adoption to more balanced, practical integration.
You can’t stand out anymore just by using AI. It’s no longer the magic trick—it’s becoming a feature, not the game-changer. What companies need now are deeply integrated solutions that actually fit their workflows. After all, who wants to face a full-blown crisis when the server goes offline, the context resets, or the daily usage limit hits? That’s the kind of nightmare that could drain your entire coffee supply.
Speaking of coffee — we’ve got something special this week ☕️
We’re giving away 5 unlimited-access codes for Breve, the ultimate app for coffee lovers, created by Natalia Panferova.
Be among the first 5 commenters on this issue and share a screenshot of your favorite recipe — you’ll get a promo code to enjoy this delightful app!
Connect with the "Those Who Swift" team - Justas Markus & Anton Gubarenko 👋
Sponsor 🤝
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Swift Around the Web 🌐
Adopting Liquid Glass: Experiences and Pitfalls
Weichao Deng shares lessons from integrating the new Liquid Glass design in iOS 26 apps, highlighting issues like rotation glitches, morphing animations, and button hit-testing. He also explores APIs like GlassEffectContainer and glassEffectUnion to improve animation performance and reduce rendering overhead.
How to Use OptionSet in Swift
Vlad Butko explains how OptionSet lets you define bitmask-based options (e.g. showing/hiding UI features) and use set operations (union, contains, etc.), then contrasts it with an enum + Set approach to highlight why OptionSet is more concise and performant.
Introducing Swift Profile Recorder
Swift now includes Swift Profile Recorder, an in-process sampling profiler you can add via a Swift package to profile your services in production without extra system setup.
Coding 👨💻
Array vs Set in Swift: Which Is Faster for Large Data?
Himali Marasinghe compares Array and Set performance in Swift, showing that Set excels in large-scale membership checks and insertions, while Array remains useful when order matters.
iOS 26: Foundation Model Framework - Code-Along Q&A
Unique, one-of-a-kind Q&A from the latest Apple Foundation Models framework code-along event — highlighting all the hottest topics.
Apple 🍏
iOS/iPadOS/macOS/tvOS Beta 2 Releases
A new beta version—iOS 26.1 Beta 2—is now available for developers to test.
Design 🎨
Creating Custom Controls in SwiftUI: Learnable, Memorable, Accessible
A guide on building custom SwiftUI controls that are intuitive to use, leave a lasting impression, and are fully accessible—considering interaction, affordance, and support for assistive technologies by Jordan Morgan.
Other cool stuff 🧰
An Illustrated Introduction to Linear Algebra
Aditya Bhargava uses visual examples and real-world scenarios to make linear algebra approachable. Concepts like Gaussian elimination, vector spaces, and systems of equations are explained step-by-step, making the subject clear even for beginners.
Interactive Fiction in Swift!
Alan Quatermain describes his journey building a choose-your-own-adventure engine in Swift that supports the Z-Machine format (ZIL/ZAP/ZIP), using Claude Code to assist in generating and iterating parts of the tooling, while highlighting its strengths, limitations, and lessons learned.
AI 🤖
Hume AI Platform
Hume AI offers tools to analyze and generate emotionally expressive speech, face, and text data through APIs like Empathic Voice Interface (EVI), Text-to-Speech, and Expression Measurement.
Introducing AgentKit
Hume AI offers tools to analyze and generate emotionally expressive speech, face, and text data through APIs like Empathic Voice Interface (EVI), Text-to-Speech, and Expression Measurement.
Tutorials 📒
Programmatic Navigation in SwiftUI
This guide shows how to use NavigationPath and navigationDestination to perform navigation based on data or state changes rather than user taps—making navigation cleaner, testable, and more flexible.
Video 🎥
Why a custom ViewModifier is often useless! (in SwiftUI)
Vincent Pradeilles highlights that not every logic should be moved into separate ViewModifier.
Friends
Breve is an iPhone/iPad app by Natalia Panferova that brings café-style recipes to your kitchen, adapting to whatever equipment you have.
Yet, another thing…🍩
The Simpsons API
The Simpsons API is an open REST service offering data about characters, episodes, locations, and images from the Simpsons universe—no authentication required.
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Favorite has to be Iced Americano. https://imgur.com/a/h1V0AaL
Salt Coffee (Cà phê muối)
Ingredients (for 1 serving)
2 tbsp Vietnamese ground coffee (robusta preferred)
100 ml hot water
2 tsp sweetened condensed milk
2 tbsp heavy cream (or whole milk for a lighter version)
A small pinch of sea salt (about 1/8 tsp)
1 tsp sugar (optional)
Ice (optional, for iced version)
Instructions
Brew the coffee
Use a phin filter if you have one, or a French press/dripper.
Pour hot water over the coffee and let it drip/steep for about 4–5 minutes.
Make the salted cream
Whip the heavy cream with salt (and sugar, if you like) until slightly thick but still pourable.
The texture should be soft — not stiff like whipped cream.
Assemble the drink
Pour the condensed milk into your glass.
Add the brewed coffee on top and stir gently.
Spoon the salted cream on top.