This is a report of my activities in 2021 Q4. Project changes, learning, and so on! Client work New client projects started in this period. Coral Thank you, Coral team. I’m looking forward to working with you again. An app project with a Japanese startup Building a new messaging app for teenagers. Using SwiftUI, Firebase, GraphQL, The Composable Architecture (TCA), and so on. An art app project with an artist based in New York Building a photo-based app with some interesting ideas. Technical consultancy work: giving technical advice and writing code together in pair-programming sessions using TUPLE. Learning New programming languages ...

Hello, world. As Q3 of 2021 has finished, I wrote a summary of my activities during this period. The summer has finished, winter is coming very soon, but I’m enjoying nice autumn weather very much these days. I hope these activities in Q3 will lead to great outcomes in Q4 and the future. Client work Coral mediation app HealthKit integration, file downloading using file system and Realm, Firebase In-App Messaging, Xcode 13 & iOS 15 update, dependencies update, and of course UI & feature updates! Thank you, Coral team😀 Output I wrote blog posts regarding my tech interests and career. Enjoy reading if you haven’t read them. ...

Since the beginning of 2021, I’ve been considering tech areas that I’m going into for the next few years. As I roughly decided them, let me share my thoughts about it :) Context Back in 2015, I decided to focus on iOS app development, since when I’ve been working mostly on iOS apps. To keep being a good iOS developer, I had to keep up with so many topics around Swift/iOS and wasn’t able to make enough time to catch up with things outside of them. ...

Let me share my past presentation slides. Even though some engineers in Japan know me because of my past talks, those who aren’t familiar with the Japanese dev community might not know me well. Giving presentations is an important activity for me. I like summarizing my interests, knowledge, and experience into the format of presentations from time to time. Therefore, I believe these presentations have represented my interests quite well. So, enjoy reading these. If you have any questions or maybe future opportunities for talks, I’d be more than happy to hear from you! ...

Hello, world. Let me share some of my findings of Haskell and Swift. I got interested in functional programming, especially in Haskell, when I realized that most of my favorite Swift features come from functional programming. My favorite features include enum with associated values, Result type, higher-order functions (i.e. passing functions themselves), KeyPath type, and so on. After started learning Haskell, I found there are more common features between Swift and Haskell than I expected. Some data types are essentially the same, some syntax is similar, and some concepts are common. In fact, Chris Lattner, who is the main author of Swift, confirms that Generics in Swift is inspired by Haskell according to an interview. ...

Hello, world. I’m going to share my report on the second quarter of 2021. Fortunately, I could start working on a client project, learned new stuff, and attended some events! I hope to see some more progress in Q3. By the way, in the Netherlands, April and May were quite cold😰 (April was the coldest April in 35 years in NL!), it became warm☀️ (almost suddenly) in June. Client work Coral app Apple/Google SignIn, Push Notification (FCM), some new screens, some investigations, and bug fixes. Thank you, Coral team! I’m open to working on more projects on a part-time basis or short-term projects. Contact me if you need my help! ...

I’ve made my new website to explain who I am, what I’ve been doing, and what I’m gonna do. This is the site. Also, I’m going to gather some blog posts that I wrote on multiple platforms into here. Please come here and check regularly🙂 Technologies used for this site GitHub Pages Hugo: The world’s fastest framework for building websites PaperMod theme GitHub Actions for Hugo Visual Studio Code These tools are really nice! ...

While preparing for my new life and business in a new place, which is in Amsterdam, the Netherlands, since November 2020, I used a lot of time to learn new things. Since 2015, when I started working on iOS app development, I’ve focused on iOS/Swift things and haven’t spent much time learning outside of the iOS/Swift world. This was a strategic choice and I learned a lot by exploring Swift. However, I felt the time has come to learn outside of iOS/Swift, to have broader and deeper knowledge about software development. ...

It’s been about 10 months since I moved to Prague. I’m not sure how I could summarize my days because so many new things have happened and so many feelings have come in and gone by since I moved here. Sometimes it’s difficult to recall what I was doing and feeling and my memory is sometimes confusing, however, I’d like to write things down so that I will be able to recall these feelings in the future. Even though this is a very personal summary, I wish this gives you some insights into a relocation experience. ...

I attended UIKonf for the first time. I went there from Tokyo by 12-hour flight, but it was worth spending much time for me😄 (This is the same post as the one I wrote on Medium.) Photos Social event (I chose Kayaking) & Kickoff party on Sunday Radialsystem V was a great place✨ ...