How it's built: Recent Episodes
Sash Zats
Have you ever wondered what's inside of that app you use everyday? Curious how did the app you can't live without built that feature? This channel provides a unique peek behind the scenes of iOS (and not only) apps so you can get inspired by the ideas, learn about constrained and grow as an engineer. Your constructive feedback is greatly appreciated.
James Thomson has been maintaining PCalc for over 20 years. How do you write code that survives two decades? Well, you don't but how do you make it less painful? Learn about the natural selection process leading PCalc to have the engine separated from the UI, and how it came handy many years later. Custom UI, accessibility, easter eggs, and the ultimate question of universe: is calculator app a good business? - this episode has something for everyone.
Links:
James Thomson @jamesthomson
PCalc
DragThing
An Illustrated History of Easter Eggs
Dice
Chapters:
00:00 Intro
00:34 History Of PCalc
05:45 UI / Engine separation
12:22 Architecture
13:34 State machine
17:31 Cross-platform
19:19 In-depth state machine
22:54 Case for encapsulation of numeric types
25:44 Reverse engineering a calculator
27:48 UI theming
39:19 Representing numbers
43:12 Unit conversion engine
47:03 Work from home, year schedule
48:41 Importance of learning
53:02 Investing time
54:19 Art for PCalc
56:53 About screen
1:03:33 Dice app as a testbed
1:06:04 Testing and accessibility
1:14:13 Cross-platform
1:19:18 Business of selling a calculator app
1:26:42 iOS community
1:33:41 Closing remarks
Radek Pietruszewski has been working at Nozbe for 8 years building out an industry leading productivity tool. Nozbe places high value in making its tools available across all the platforms, which dictated an interesting technological choices.
Looking forward to your feedback on twitter: @zats
LINKS:
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Radek Pietruszewski
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Nozbe
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WatermelonDB
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ZACS
CHAPTERS:
00:00 Intro
05:23 React vs ReactNative
08:29 Build a New Screen in React
09:18 Styling
11:12 Routing
13:40 Dependency Injection
16:04 Testing vs Dogfooding
19:17 Adding New Native Features to React Native
22:13 Performance
27:01 Offline-first Approach
29:30 Reactive UI
31:04 Conflict resolution
34:13 Networking
36:12 Storage
38:23 Dark Mode Support
42:47 IDEs
46:18 Zero Abstraction Cost Styling
50:02 Making great apps in React Native
54:58 Outro
Ryan Nystrom is a Director of Engineering at GitHub where he's supporting several teams building mobile and desktop apps. In this episode we discussed a broad range of topics from UI, and GraphQL to custom navigation framework, and responder chain.
EPISODE LINKS:
Ryan Nystrom https://twitter.com/_ryannystrom
GitHawk https://github.com/GitHawkApp/GitHawk
GitHub for Mobile https://github.com/mobile
GitHub Feedback https://github.com/github/feedback
Work at GitHub https://github.com/about/careers
Chapters:
00:00 Intro
03:24 Manager writing code
05:05 In-app Navigation
09:33 Responder Chain
10:55 App State & Dependency Injection
15:12 Storyboards vs programmatic UI
19:45 SwiftUI
21:46 Networking
26:18GraphQL
28:14 Cache
32:56 Polling
34:41 iOS 13-Compatible Sidebar
39:51 Catalyst vs Electron
41:42 Web UI
46:29 Roadmap
50:40 Client Analytics
54:22 Dogfooding vs Feature Preview
55:42 Open Source
57:35 Outro
Bridger Maxwell is the engineer behind Scribble Together - a collaborative drawing app. In this episode we discuss general software architecture, networking, and drawing aspects of the app.
EPISODE LINKS:
Bridger Maxwell https://twitter.com/bridgermax
May-Li Khoe https://twitter.com/mayli
Scribble Together https://scribbletogether.com
Origami Studio https://origami.design
Chapters:
0:00 Intro
1:07 About the app
3:13 Core architecture, conflict resolution
13:59 Swift on the Server
17:34 Networking
24:23 In-app navigation
26:20 Shape recognition
32:50 Touch processing, model persistence
39:02 Dependency injection
40:06 Web-sockets
42:39 Future plans
43:48 OpenGL and Metal vs CALayers and CoreGraphics
46:52 Outro