Ever wondered how to use micro-services approach in a FED\mobile application? Hesitating to choose React Native for your big project? I’m here to eliminate the school of thought that React Native is mostly for small mobile applications.

You’re starting a conference. You announce the conference, start planning the venue, getting sponsors, & fielding talks. Things start getting serious, & before you know it you’re overloaded with obligations. Oh, & you forgot: You also need a conference app!

You don’t just want any conference app; you want it to be fun, engaging, & a valuable addition to the attendees. How can you do this in the least amount of time?

In this talk, I’ll show how you can rapidly prototype, build, & deploy your app using GraphQL, React Native, & AWS AppSync so you can spend your time worrying about more important things in life. In addition to what you’d expect from a conference app, we’ll be adding live chat so attendees discuss talks & speakers can field questions & interact with them in real-time.

React has helped us build web applications faster than ever, but turns out this doesn’t help build mobile apps. The main hurdle for web developers coming to mobile development (native apps with React native or PWAs) is handling offline capabilities.

In this talk I’ll speak firsthand about this learning curve, the pitfalls and realisations of doing this in production apps. As an architect developer at Theodo I’ve seen developers struggle with this mindset switch on our projects over the past 2 years, and want to share our learnings!

I’ll speak about:
- Optimistic UX updating
- Data persistence between app/server
- Offline mode (request queuing)
- Reconciling updates after this

Handle accessibility in a real context to make your apps accessible for blind people goes beyond the accessibility label and guidelines on the React Native documentation, and discover new accessibility feature in RN 0.60. See real cases and design flawless that can make the development too difficult, and learn about good practices to create a real accessible app for everyone.

From a quick glance, it might not seem like D3 and React are a match made in heaven. After all, they’re both all about being in charge - who gets to render, who gets to update, who gets to decide how things should look... the story goes on and on. But with these two, as in life, the best relationship is about compromise and sharing responsibilities. So, how can we turn a tug-of-war into a beautiful, responsive, animated tango? Enter, React hooks!

Sometimes an app needs to access a platform API and React Native doesn’t have a corresponding module yet. Maybe you want to reuse some existing Objective-C, Swift or C++ code without having to reimplement it in JavaScript, or write some high performance, multi-threaded code such as for image processing, a database, or any number of advanced extensions. In this talk you will learn how to do that and see a real-world example.

Tensorflow.js brought Machine Learning to Javascript that gives a wide range of possibilities. Now it is possible to build, train and use ML models directly in browser. But the efficiency of ML model highly depends on the features that it is using. React allows to reinforce ML feature engineering process. It is great for displaying fast-changing data in web and let to visualize features, model’s layers and weights in a run-time during model training that gives useful insides on how features correspond to the result, what are good features and what features could be removed. During the session we will use React-based model visualization to pick the best features to predict results of soccer matches played at the FIFA World Cups. We will check count of matches that team have won and lost, count of wins and loses against a particular competitor, goal differences, stage, etc. We will validate our model using matches results from the last Mundial in Russia in 2018.

React Native is now 4 years old. During this time, we’ve observed more progression than ever before towards the vision of a cross-platform mobile solution. Even still, we have yet to realise its core mission of being as powerful as pure native. There have been many challenges that we’ve faced head on as they’ve surfaced. In overcoming them with the support of the community, we’ve managed to establish React Native as a force that is now defining the future of the segment.
In this talk, we’ll explore this history-in-the-making before diving deeper into more technical subjects including the JSI & JSC upgrade, TurboModules & Fabric, and the CodeGen. With all the pieces of the puzzle in place and landing on master by end of the year, we are closer to reaching our original objective than ever before - while pushing the limits to a whole new level.