Hello, I’m Yoshikuni!

A software engineer with 8+ years of work experience in application development.
Based in Amsterdam🇳🇱. Originally from Japan🇯🇵.
Read my profile to know more about me!

Report - July to September, 2021

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!...

October 6, 2021 · 4 min
System programming, JavaScript ecosystsem, Functional Programming

Three tech areas I'm going into

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....

September 16, 2021 · 6 min
This is a screenshot of my SpeakerDeck page

My past presentations

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....

August 25, 2021 · 2 min

Haskell and Swift

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....

July 23, 2021 · 4 min

Report - April to June, 2021

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...

June 29, 2021 · 3 min

Released my new website🎉

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!...

May 3, 2021 · 1 min

Learning Again, Nov 2020-Mar 2021

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....

March 21, 2021 · 4 min

Moving from Tokyo to Prague, 2019

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....

July 4, 2020 · 3 min

UIKonf 2018 Report

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✨ Coffee and tea from Companion Coffee, ice cream and beer after talks🍻 Lots of conversation inside & outside of the venue Ambassador dinner (I chose German dinner) Unconference at the last day✨ CocoaHeads Berlin meetup at Babbel Thoughts Social events on the first day (before the conference) were great because it could be a good topic to start conversations with other attendees....

May 23, 2018 · 2 min

My development environment 2018

I’m an iOS app developer in Tokyo. Let me show you my current development environment, which I’ve considered a lot😄 (This is the same post as the one I wrote on Medium.) Pictures Office Home Hardwares MacBook Pro 13-inch 2017 Microsoft Sculpt Ergonomic mouse Using Better Touch Tool to use side button as “back”. Microsoft Natural Ergonomic keyboard 4000 / Microsoft Sculpt Ergonomic Desktop Rain Design mStand Laptop Stand Smartphone stand which I bought at CanDo Elecom dimp gel EX Hand rest This reduced my wrist pain a lot😁 iPhone 8 plus & iPad mini 4 Terminal Iterm2 zsh prezto: zsh configuration framework I’m using prezto default theme....

January 16, 2018 · 1 min