Chris Trott (@twocentstudios) profile picture

Chris Trott

@twocentstudios

iOS engineer, musician, artist. Currently working on Eki Live, a train tracking iOS app for Tokyo. Previously Cookpad, Timehop. @twocentstudios@hachyderm.io

 Tokyo-to, Japan
twocentstudios.com
Joined March 2011
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Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)Photo by Chris Trott (@twocentstudios)
Chris Trott retweeted
iOSDC Japan (@iosdcjp) profile picture
iOSDC Japan@iosdcjp20 Sep 2025
Next up: 2025/09/20 16:15 Track D / 列車行程追跡アルゴリズムを書こう / Chris Trott @twocentstudios #iosdc #d fortee.jp/iosdc-japan-2025/p…
列車行程追跡アルゴリズムを書こう

列車行程追跡アルゴリズムを書こう

本セッションでは、Live Activityに現在駅と次駅を表示するiPhoneアプリを一緒に作りながら、乗客がアプリを開く必要のない体験を実現します。その道中でCore Location、Core Motion、ActivityKit、SQLiteなどのフレームワークを使います。 1. データ収集 まず、実際のGPSデータを収集する専用iPhoneアプリを実装します。 2. アルゴリズムの...

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Chris Trott from @twocentstudios reflects on three thorny Swift concurrency pain points encountered recently. These issues highlight how Swift Concurrency’s abstraction still leaks when bridging with old frameworks. twocentstudios.com/2025/08/1…

3 Swift Concurrency Challenges from the Last 2 Weeks

twocentstudios.com
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Giving Claude Code Eyes to See Your SwiftUI Views by @twocentstudios Curated in this week's #swiftleeweekly avanderlee.com/swiftlee-week…

SwiftLee Weekly - Issue 346

SwiftLee Weekly - full of Swift, Xcode, and iOS curated content from the community delivered on every Tuesday for free.

avanderlee.com
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Rendering Pixel Art with SwiftUI by @twocentstudios Curated in this week's #swiftleeweekly avanderlee.com/swiftlee-week…

SwiftLee Weekly - Issue 346

SwiftLee Weekly - full of Swift, Xcode, and iOS curated content from the community delivered on every Tuesday for free.

avanderlee.com
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Conditional breakpoints can impact performance. Learn how to identify and resolve unexpected slowdowns in your debugging process with @twocentstudios twocentstudios.com/2024/08/0…
Reminder: Conditional Breakpoints are Slow

Reminder: Conditional Breakpoints are Slow

twocentstudios.com
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It’s a little early, but here is a halloween-themed animation. I used Blender for both the hand drawn 2D dancing guy and the 3D background. Learning 3D this weekend was both frustrating and fun.
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Chris Trott retweeted
Satoshi Namai (@ainame) profile picture
Satoshi Namai@ainame5 Mar 2018
“Cookpad Tech Kitchen #14 〜海外で働く〜 開催報告 - クックパッド開発者ブログ” htn.to/RhUDtdtZqK
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Come join us for our inaugural hackathon hosted by @uber! Please let us know if you are interested in childcare! meetu.ps/2LN2nn
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I wrote about using atomics to get rid of some of those nasty at-synchronized blocks in #objc: biasedbit.com/blog/objc-atom…
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Chris Trott retweeted
🍉 (@kevrone) profile picture
🍉@kevrone16 Mar 2015
I wrote a thing about #DynamoDB @timehop medium.com/building-timehop/… – at Manhattan, NY
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Chris Trott retweeted
Albert Tong (@AlbertTong) profile picture
Albert Tong@AlbertTong9 Mar 2015
#TechTalk about MVVM in iOS development by @TwoCentStudios @timehop #iosoho – at Manhattan, NY
Image from Albert Tong (@AlbertTong)
Image from Albert Tong (@AlbertTong)
Image from Albert Tong (@AlbertTong)
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Chris Trott retweeted
Benny Wong (@bdotdub) profile picture
Benny Wong@bdotdub9 Mar 2015
Spoiler alert on @TwoCentStudios' iOSoho talk tonight on "MVVM Architecture at @timehop": There will be at least one troll face.
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Chris Trott retweeted
Benny Wong (@bdotdub) profile picture
Benny Wong@bdotdub25 Feb 2015
Just published “Why @Timehop Chose Go to Replace Our Rails App” #golang medium.com/p/2855ea1912d
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Chris Trott retweeted
Timehop (@timehop) profile picture
Timehop@timehop18 Feb 2015
I just wear the lab coat for fun. Our own @edc1591 is the real scientist bit.ly/thrcmv #ReactiveCocoa #MVVM
Image from Timehop (@timehop)
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Inside @timehop’s Stack: @bdotdub discusses the decision to switch from @rails to @golang. bit.ly/13J8tOy
Image from Underdog.io (@underdogjobs)
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Chris Trott retweeted
Ash Furrow (@ashfurrow) profile picture
Ash Furrow@ashfurrow13 Nov 2014
I wrote about developing @artsy’s new auctions kiosk app as open source, using Swift and ReactiveCocoa: artsy.github.io/blog/2014/11… – at Weesperzijde, Amsterdam
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Chris Trott retweeted
Jay (@itsjaydesu) profile picture
Jay
@itsjaydesu2 Nov 2014
Answer by Ou Gaohan to If you can read Chinese, can you also read Japanese? qr.ae/DSgE8
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2 years to the day we launched the Timehop app :) timehop.com/c/c:50854db4e4b0…
Image from Jonathan Wegener (@jwegener)
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Chris Trott retweeted
🍉 (@kevrone) profile picture
🍉@kevrone21 Oct 2014
6 Stages of Debugging: 1) Can’t happen 2) Not reproducible 3) Shouldn’t happen 4) Why does that happen? 5) oic 6) How did that ever work?
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Chris Trott retweeted
Benny Wong (@bdotdub) profile picture
Benny Wong@bdotdub22 Sep 2014
Anyone have extensive #ReactiveCocoa experience to help us work through some performance optimizations for @timehop? – at Manhattan, NY
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