Agenda

• 2023-11-07 - Workshop

  • 09:00Workshop

    Workshop: Data Flow in SwiftUI from @State to Observable to SwiftData

    Join Daniel Steinberg for a workshop about SwiftData. Expand for details…

    This fast moving workshop will examine the many ways we work with state in a SwiftUI app. We’ll begin with a quick look at the familiar case in which state that belongs to the View itself and look at some requirements and best practices for @State and @Binding. Next, we move the state to controllers and models and work with ObservableObjects and @Published. We briefly explore AsyncStreams and AsyncSequences before moving to the all-new Observable APIs. Finally, we see how easy it is to persist model data using the new SwiftData framework. Whether you’ve embraced CoreData in the past or avoided it up to this point, you will see the future for persistence on Apple devices in this first look at SwiftData.

    Daniel Steinberg

    Daniel loves to write about, teach and code for Apple platforms using Swift. Daniel is the author of more than a dozen books including the best-selling books A Functional Programming Kickstart, A SwiftUI Kickstart, A Swift Kickstart and Dear Elena. Daniel presents iOS, Functional Programming, SwiftUI, and Swift training and consults through his company Dim Sum Thinking.

    

    Daniel Steinberg

  • 09:00Workshop

    Workshop: Getting started with Swift Concurrency

    Join Donny Wals for a workshop about Swift Concurrency. Expand for details…

    What you’ll get out of this workshop

    This workshop is an in-person workshop that will be in Amsterdam the day before the conference at the NEMO Science Museum. The format alternates between a theoretical explanation with presentations and coding examples, and performing tasks alone, and / or in groups. After each task we go over the solution and there will be tons of room for questions.

    Alongside the presentations, you will have access to a reader that you can download. This reader contains all theory that is explained during the workshop, as well as information on each of the tasks, and it also contains the sample app you’ll be working on. Having this reader allows you to refer back to what you’ve learned whenever you want, even after the workshop is already done.

    By the end of the workshop, you will receive a certificate of completion so you can show what you’ve learned to friends, family, and employers!

    Workshop prerequisites

    This workshop is intended for intermediate to advanced developers. The sample app we’ll work on will be SwiftUI based, but the majority of the work you’ll do is done in a UI agnostic manner. This helps ensure that we focus on Swift Concurrency, and not on details like the UI. Of course, we will take a good look at how data flows towards the UI but it’s not the workshop’s main focus.

    Attendees are expected to be familiar with the basics of SwiftUI, networking, and ideally attendees have worked with Grand Central Dispatch at some point. You don’t need to have mastered these topics, but basic familiarity is assumed.

    The workshop will use Xcode 14.3 with Swift 5.8, and the materials will be focussed on iOS 15.5 and newer.

    Topics covered in the workshop

    In this workshop, attendees will refactor a simple application that fetches data from the network with various requirements that make Swift Concurrency a great candidate.

    An introduction into async / await

    The cornerstone of Swift Concurrency that programmers interact with most is async/await. In the first section of the Concurrency workshop we’ll dig into the basics of using async/await, and we’ll immediately talk about how Swift Concurrency manages threads and tasks. This is vastly different from GCD and requires some explanation.

    After the initial explanation, attendees will practice using async/await in a simple example where they’ll just fetch some data from the network.

    Refactoring existing code to work with async / await

    As much as we’d all love to dig in with async/await right now, the fact of the matter is that most of us are maintaining existing codebases and can’t just replace everything all at once. In this section, you will learn about the mechanisms in Swift Concurrency that allows you to take existing callback based code and make it work with async/await.

    Synchronizing access with actors

    Actors are a huge part of Swift Concurrency that solve an extremely important and complex problem. In this section, you will learn how actors fix data races. I’ll explain some of the rules and limitations of using actors by building a simple token refresh flow.

    While the focus in this section is on actors, we’ll be using various interesting concepts within the world of async await to implement a token refresh flow logic.

    Testing your async / await code

    In this section we’ll take a very quick look at XCTest and how you can test your asynchronous code.

    Orchestrating tasks with async / await

    Sometimes, you want to kick off multiple tasks that need to be performed asynchronously, and only resume work when all tasks are done. With GCD, we would use tools like a dispatch group to achieve this.

    With Swift Concurrency, there are different tools like task groups and async let that we can leverage to achieve our goal of performing work and waiting for all work to be finished. You will learn about these features in this section, and then you’ll apply the lessons learned in the sample app.

    Donny Wals

    Donny is a passionate and curious iOS developer, Author and Speaker. He has written several books on iOS development and has delivered dozens of talks and workshops over the past years. Next to iOS development he’s a huge cat lover and he likes dabbling on his guitars.

    

    Donny Wals

  • 17:00Drinks

    Drinks

    At the end of the workshop all attendees, Donny, Daniel, and Qing and Jeroen will have a drink together.

    Upstairs on the 5th, in the NEMO Science Museum Restaurant.

    Today there won’t be ING developers available during the drinks. But the ING does want to make sure you are well taken care of.

    If you are taking part in the conference days, drop by during the drinks on the first conference day and meet the key developers behind the Netherlands’ biggest financial app, the ING Mobile Banking App!

    Always wanted to know what it’s like to work on an financial app used by millions of people, to work with more than 50 highly skilled iOS engineers on an app used in multiple countries? Send an email to sjoerd.van.oostenbrugge@ing.com and we might speak soon!

    

    ING

• 2023-11-08 - Conference Day 1

  • 08:30Logistics

    Doors open

    Get into the venue. Mingle and get to know each other.

  • 09:00Welcome

    Welcome to Do iOS Day 1

    We’re happy to have you as an attendee, an amazing line-up of speakers awaits. Before getting started, Jeroen takes you through the practical details of the conference.

    

    Jeroen Leenarts

  • 09:15Talk

    Widgets, Widgets Everywhere and Not a Pixel to Spare

    Discover the power of interactive widgets in iOS/iPadOS 17, and macOS 14.

    This session explores their evolution, implementation across platforms, and the use of App Intents. Ideal for developers aiming to master the widget in their apps and create more powerful and interactive user experiences.

    What you’ll get out of this Talk

    The rollout of widgets across the Apple ecosystem, be it an iPhone, iPad, Mac, or the Watch, can transform the user experiences on these devices. As Apple unveils interactive widgets in iOS 17, iPadOS 17, and macOS 14 and brings them to life, we know they will become integral in our daily lives.

    This talk explores interactive widgets to guide you and give your users powerful interactions whenever and wherever they need them.

    Session attendees will learn the following:

    • Evolution from iOS 14 static and dynamic widgets to interactive ones
    • Implementing interactive widgets across platforms
    • Utilising App Intents in widgets, Shortcut and Siri
    • Tips and tricks for pixel-perfect widget implementation

    An invitation for you to reinvent, reimagine, and rethink interactive user experiences - one pixel at a time.

    Rudrank Riyam

    Rudrank is an independent writer, engineer, writing, and developer for Apple Platforms. You can mostly find him tinkering with Apple Music API or MusicKit, or both.

    

    Rudrank Riyam

  • 10:00Break

    Coffee

    Time for a break.

  • 10:45Talk

    Getting Accessible: A Practical Approach

    Maybe you are already aware that how people interact with your app can differ. That people prefer to interact in a way that suits them best. And that making your app accessible is important, but maybe you don’t know where to start. In that case, this session is for you.

    Jeroen will share how their accessibility journey at ABN AMRO started and hopes that you can apply some of the ideas in your own organization.

    • How you can handle different perceptions
    • How you can shift left to integrate accessibility in your development cycle
    • How you get to know what is in the guidelines
    • How to prioritize the fixing of different types of issues and meet the 2025 legislation deadline.

    All in an effort so that you yourself can get the subject of accessibility rolling within your company.

    Jeroen de Vrind

    Jeroen turned from pharmacist into an iOS software engineer. He has 8 years of experience, mainly within ABN AMRO. When he got in contact with a user of the ABN AMRO app, who had a visual disability, he got interested in the topic accessibility. He’s the author of the book ‘How to develop accessible iOS apps’ that you can find in the Apple Book Store.

    This talk is a sponsored by ABN-AMRO.

    

    

    Jeroen de Vrind

  • 11:10Talk

    A talk by our sponsor RevenueCat

    More info later…

    This talk is a sponsored by RevenueCat.

    

    

    Charlie Chapman

  • 11:30Talk

    Envisioning the Future: The Promise of VisionOS in Transforming User Experience

    Exploring the transformative potential of VisionOS, we will delve into its anticipated impact on UI/UX paradigms, developer opportunities, and the broader ecosystem of Apple, while envisioning the next chapter in digital experiences.

    In the ever-evolving landscape of technology, Apple’s VisionOS introduces a new era of user interaction and experience. Exploring the broader capabilities of VisionOS, we find ourselves on the threshold of a transformative shift in mobile and wearable interfaces.

    In this talk, we’ll delve into

    • Historical Context: A brief retrospective of iOS’s evolution and how VisionOS stands as its next monumental leap.

    • Theoretical Implications: How might VisionOS redefine what we understand as “user experience”? From intuitive gestures to immersive AR environments, we’ll extrapolate the potential shifts in UI/UX paradigms.

    • Developer Possibilities: Even without specific lab details, the general capabilities of VisionOS suggest a numerous opportunities for app developers. We’ll speculate on best practices and potential trends.

    • Broader Ecosystem Integration: VisionOS doesn’t stand alone. How might it interact with and elevate the existing suite of Apple products and services?

    • Final Thoughts: A speculative glimpse into the future, drawing from current tech trends and Apple’s historical trajectory.

    Monika Mateska

    Monika is an iOS engineer mastering the magic of Augmented Reality. Co-founder of CocoaHeadsMK – where Apple tech thrives. Always on the hunt for the next big innovation and passionate about breathing life into tech ideas.

    

    Monika Mateska

  • 12:15Break

    Lunch

    Time for lunch

  • 13:15Talk

    You say day-ta and I say dah-ta

    Just when we had all given up on ever seeing a Swift-native persistence framework, Apple dropped one on us anyway.

    But is SwiftData entirely new, or an old wolf in sheep’s clothing? Is it the yin to SwiftUI’s yang, or is NSManagedObject hiding in the shadows ready to pounce? To answer these questions and more, I’m going to take a deep dive into the data — the SwiftData. What are those shiny new macros hiding, what’s still missing in the inaugural release, and how useful is what is already there? Join me to find out why you should be using SwiftData in your next project, and why you should reconsider.

    Drew McCormack

    Drew is founder of The Mental Faculty, developer of Mental Case and the Ensembles sync framework.

    He works on Agenda. Agenda is an Apple design award winner, editor’s choice, and is featured a lot in the App Store, particularly for the Mac. Agenda made a switch to an interesting business model a while ago.

    

    Drew McCormack

  • 14:00Talk

    NavigationStack - Finally a Worthy Companion

    Introducing NavigationStack, a game-changer for SwiftUI navigation. Overcome the limitations of NavigationView.

    Discover its features, benefits, and seamless integration into SwiftUI projects. In this talk we will explore this powerful framework and revolutionize your app design.

    • Up until this point, building native iOS apps solely with SwiftUI has been a challenging task due to the limitations of its navigation capabilities. Consequently, many developers have resorted to utilizing UIKit for their navigation needs. However, with the introduction of the NavigationStack, a revolutionary framework designed specifically for SwiftUI, this limitation is no longer a barrier.
    • Filip has firsthand experience with the struggles of SwiftUI navigation. He is currently working on a banking app that was initiated when SwiftUI was first introduced. Due to the limitations of SwiftUI’s navigation, the app’s navigation infrastructure was based on UIKit, resulting in an inconsistency in the tech stack.
    • In this talk, he aims to explore the possibilities unlocked by the NavigationStack. By leveraging this powerful framework, developers can create seamless navigation flows within SwiftUI applications. He will delve into the various features and functionalities offered by the NavigationStack, demonstrating how it can serve as a worthy companion in overcoming the navigation challenges faced by SwiftUI developers.

    Key Points to be covered:

    • Overview of the challenges faced in native iOS app development using SwiftUI’s native navigation capabilities.

    • The adoption of UIKit for navigation needs in SwiftUI apps

    • Introduction to the NavigationStack: a powerful framework designed to enhance SwiftUI navigation.

    • Deep dive into the features and functionalities of the NavigationStack.

    • Demonstrations of practical implementation examples highlighting the benefits and advantages it brings to SwiftUI navigation.

    • Best practices and tips for integrating the NavigationStack seamlessly into SwiftUI projects.

    Filip Sardjoski

    Filip Sardjoski, a Senior iOS Engineer with 6 years of experience in developing software solutions mainly for banks and financial institutions. Currently, Filip works at Netcetera as an iOS lead, working on a mobile banking application for PostFinance, the financial unit of Swiss Post. This effort has resulted in an impressive user base of 1 million active monthly users and 20 million monthly logins.

    Filip is one of the founding members of CocoaHeadsMK. A platform dedicated to creating an environment that promotes continuous learning and encourages knowledge sharing among enthusiasts. Each month, they host meetups that attract between 40 to 50 participants, fostering a vibrant and engaged community. In addition to local activities, CocoaHeadsMK is currently expanding their reach and influence by organizing a conference that caters to a global audience, scheduled for May 2024.

    

    Filip Sardjoski

  • 14:45Break

    Coffee

    Time for a break.

  • 15:30Talk

    Hidden sides of Code Review

    Learn about some best practices for handling pull requests, based on the experience by the team at our sponsor ING.

    In a large and complex organisation like ING, dozens of Pull Requests are being merged every day and many hours are spent on code reviews. In this talk, we will walk you through some approaches we use and talk about some hidden sides of the beast called: ‘Code Reviews’.  We will look at it from an atypical angle: psychology, culture and communication theory. We use these branches of science to explain some well-known best practices and discover new ones already in use at ING.

    Learn more about ING

    Always wanted to know what it’s like to work on an financial app used by millions of people, to work with more than 50 highly skilled iOS engineers on an app used in multiple countries? Send an email to sjoerd.van.oostenbrugge@ing.com and we might speak soon!

    

    

    Dmitrii Ivanov

  • 16:15Talk

    Swift Concurrency in the real world

    Learn about Swift Concurrency…

    “Can you hear me? I can’t see your screen anymore.” These are some of the phrases we use a lot during our video calls, triggered by their async nature. In this talk, we will learn how we used Swift Concurrency to tackle some of these challenges, while building our brand new video calling iOS SDK.

    This talk is a sponsored by Stream.

    

    Martin Mitrevski

    Martin is leading the iOS team at Stream. He has over 10 years of experience, working on apps and SDKs in digital payments, chats, healthcare, transport, augmented reality, conversational interfaces, insurance etc. He’s also the author of the book “Developing Conversational Interfaces for iOS”, published by Apress.

    

    Martin Mitrevski

  • 17:00Drinks

    Drinks

    At the end of the conference all attendees, speakers, and staff can have a drink together.

    Upstairs on the 5th, in the NEMO Science Museum Restaurant.

    Drop by and meet the key developers behind the Netherlands’ biggest financial app, the ING Mobile Banking App! Always wanted to know what it’s like to work on an app used by millions of people, to work with more than 50 highly skilled iOS engineers on an app that is used in multiple countries? We would love to tell you everything about it while enjoying some drinks!

    Always wanted to know what it’s like to work on an financial app used by millions of people, to work with more than 50 highly skilled iOS engineers on an app used in multiple countries? Send an email to sjoerd.van.oostenbrugge@ing.com and we might speak soon!

    

    ING

  • 18:00Dinner

    Walking Dinner provided by Stream

    Food, people, and conversations.

    What’s this about then?

    Get to know each other and all speakers a bit more at this walking dinner. Dinner is on us! Well, actually, on Stream! Stream has agreed to sponsor this amazing dinner event to end the first conference day.

    Join us!

    And while you are at it, make sure to check Stream’s amazing products.

    Stream powers Chat Messaging, Video & Audio, and Activity Feeds for billions of global end-users across thousands of different apps. Have a look over here for a taste of their chat SDK.

    

    Stream

  • 20:00Logistics

    End

    End of day 1

• 2023-11-09 - Conference Day 2

  • 08:30Logistics

    Doors open

    Get into the venue. Mingle and get to know each other.

  • 09:00Welcome

    Welcome to Do iOS Day 2

    We’re happy to have you as an attendee, an amazing line-up of speakers awaits. Before getting started, Jeroen takes you through the practical details of the conference.

    Baggage storage available in a locked room, right next to the auditorium.

    

    Jeroen Leenarts

  • 09:15Talk

    How to write a Swift Macro without going (too much) down the rabbit hole

    While very powerful, Macros also exhibit a strong learning curve: they are essentially compiler plugin, very different to write than app-level code.

    My goal in this talk is to show how to create useful Macros without spending a crazy amount of time in the process.

    Vincent Pradeilles

    Vincent is a French iOS software engineer. He works for PhotoRoom, in Paris

    

    Vincent Pradeilles

  • 10:00Break

    Coffee

    Time for a break.

  • 10:45Talk

    Journey into Metal Shaders

    Are you ready to take your apps graphics to new heights?

    Are you also a little overwhelmed and not sure where to start? No worries we can fix that!

    You may have felt that resources on Metal are scarce compared to other areas of Apple’s developer ecosystem. Fear not! This talk is tailor-made to equip you with the skills and knowledge needed to begin to harness the true potential of Metal Shaders with confidence. Let’s redefine what’s possible on as we craft creative visuals and unveil the hidden gems of Metal Shaders.

    Tianna Henry-Lewis

    Tianna, a Swift developer with an insatiable appetite for side projects. More of them on the shelf then on the store but who’s counting. When she’s not head down in Xcode, you might find her tinkering with hardware, or sharing her coding escapades and tech discoveries on YouTube. Away from the computer you can find Tianna on her bike, at the courts, or behind a film camera.

    

    Tianna Henry-Lewis

  • 11:30Talk

    Deep Dive into "any" and "some"

    As you may know, Swift 5.7 introduced the “any” keyword for protocol types, and future Swift versions will enforce its usage.

    We have already know about a similar keyword, “some,” which is mainly used in SwiftUI. We know usage differences because compiler tells us with warnings and errors, however, there are still many secrets even if the build is passed, such as, runtime behavior, performance between module, and more, which is not talked in WWDC session. If we understand the deep side of them with compiler knowledge, we can create more effective and performant Swift APIs with this knowledge.

    In this talk, Aki will discuss the mechanisms of “any” and “some” and what Swift Engineers really have to know about them. This talk puts the highest importance on knowledge of Swift Compiler, such as “Existential Container” which is the special mechanism of “Existential Type”, protocol types and method dispatch.

    You’ll learn …

    • The evolution of “any” and “some” with good Swifty API design (Recap)
    • How Swift Compiler achieves feature of protocol type and it’s performance
      • “Existential Container” and “Existential Type” to understand “any” performance
      • Module optimization of any and some
    • Why we really need to have “any” keyword from Swift 5.7 from above perspective

    This talk is targeting for the person who don’t understand how they can use “any” and “some” effectively, also you will enjoy this talk if you want to know about deep side of “any” from compiler side.

    Aki Yuki

    Yuki is an iOS Engineer at LINE. He frequently goes by “freddi” in Japan. He works for LINE, improving the Build System of the LINE application (which is most popular messaging application in Japan). He has spoken at many conferences (NSSpain, try! Swift, SwiftHeroes) and meetups as he enjoys talking about what he learned while coding in Swift. He also contributed to OSS projects, like Swift Compiler, fastlane, and XcodeGen while he had time. He loves music, cartoons (like “Tom and Jerry”, “Fooly Cooly” …), drawing cats, hand-made keyboard, his family cats, Pokemon cards, and traveling.

    

    Aki Yuki

  • 12:15Break

    Lunch

    Time for lunch

  • 13:15Talk

    Uncover the Secrets of PKCE: Elevating OAuth2.0 for security of native clients

    Learn about the structure and content related to OAuth 2.0 extension called Proof Key for Code Exchange (PKCE).

    Alina will begin by introducing the OAuth 2.0 framework and its flows, highlighting the importance of access tokens and the need for secure communication. Then she’ll delve into the Authorization Code flow, explaining steps in detail, and highlighting the need for an authorization code and the potential vulnerabilities associated with it. The focus then shifts to the concept of custom redirect URIs for native clients and an explanation of how they can be abused by attackers. To address these vulnerabilities, Alina will introduce PKCE as an extension to the OAuth 2.0 framework and explain its role in enhancing the security of authorization code grants used in mobile and native applications.

    The limitations and potential bypasses of PKCE will also be discussed using the app impersonation attack.

    Overall, this talk aims to provide a comprehensive understanding of PKCE and its role in protecting native clients within the OAuth 2.0 framework, give some tips for mitigations and highlight best practices.

    Alina Boshchenko

    Alina is a software engineer and security champion at JetBrains. Her current focuses are high-load systems, more specifically new transaction management concepts for the embedded database, software development on Kotlin/Java, and network security. As a member of the Security Champions team, she ensures the robustness of systems by identifying and fixing security issues. She is a serial hackathonner and her interests also extend to mentorship, where she guides and supports students through workshops and talks, equipping them with the necessary skills and knowledge to excel in their professional journeys.

    

    Alina Boshchenko

  • 14:00Talk

    Become a Shipshape Shipping Engineer

    Learn how to build skills and confidence to ship swiftly and safely.

    There are an infinite number of correct ways to ship but there is only one wrong way to ship… and that’s by not shipping. Shipping can be scary. This session talks about ways to build confidence in shipping projects to all kinds of audiences both swiftly and safely. These Ship It™️ techniques and tips are applicable to projects of any type and size.

    What you’ll get out of this talk

    It’s easy to get caught up in all the fun of building a new product or feature. However, shipping should never be pushed to the side or forgotten about. The reason for building new products and features is to get them out into users’ hands.

    We’ll have a heart-to-heart conversation that uncovers all of our fears around shipping and what we can do to overcome them.

    This talk is all about how to build confidence in building shipping systems that can help you ship quickly, continuously, and safely.

    Josh Holtz

    Josh is the lead maintainer of fastlane tools, founder of the Deep Dish Swift conference, and software engineer at RevenueCat. He started working on fastlane in 2015 and took over as lead maintainer in 2018. He has a passion for building tools that others find helpful. In the past few year, he’s been more active in the indie developer community starting the weekly newsletter “Indie Dev Monday”, and releasing “ConnectKit”, “An Otter RSS”, “Oh Crop”, and “What’s My Age Again”.

    

    Josh Holtz

  • 14:45Break

    Coffee

    Time for a break.

  • 15:30Talk

    A Sneak Peak at Vapor 5

    Swift is changing and so is Vapor…

    The landscape of Swift is changing as we edge closer to Swift 6. Vapor 5 is aiming to be released at the same time and in this talk we’ll take a tour of what things will look like in Vapor 5 and how we’re taking advantage of all the new Swift features to provide an awesome framework for server-side Swift

    Tim Condon

    Tim is a Swift developer from Manchester, UK and one half of the Vapor Core Team. He sits on the Swift Server Workgroup and delivers talks and workshops on Vapor and server-side Swift around the world. He runs Broken Hands, a server-side Swift consultancy and works with clients around the world to help them deploy Swift on their backends. He also co-organises the ServerSide.swift conference - the world’s first and only conference focused on server-side Swift.

    

    Tim Condon

  • 16:15Talk

    You Should Mentor That Person

    One of the most rewarding things you can do as an engineer is to be a mentor.

    But it’s often intimidating. “What if I’m not ready?” (You most likely are.) “Where do I find one?” (So many places!) “What if I give bad advice?” (The world won’t end.) We’ll address all these concerns and more to help you overcome the mental obstacles of becoming a mentor, find a mentee, and get started helping shape the next crop of engineers.

    Zachary Brass

    Zach Brass has been an iOS developer for over a decade at all different types of companies. He’s also a mentor for Underdog Devs (go look them up). In his spare time, he’s a dancer and dance instructor, and competes in the occasional pun competition.

    Two truths and a lie: Zach inherited the world’s largest collection of reflex hammers Zach once ate lunch with former Speaker of the UK House of Commons John Bercow Zach is in the FAA’s Registry of Airmen despite never having flown an airplane

    

    Zachary Brass

  • 17:00Logistics

    End

    End of day 2