• CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
  • CURRENT LIFE GOAL: PRECIPITATE THE AGE OF EFFECT SYSTEMS
Baby Kit
INTRO

I am Kit Langton and this is my website. I have written a lot of code.

I've enjoyed Haskell, Scala, Swift, TypeScript, Ruby, and Rust. But really, all programming is good.

Currently working on opencode.

LINKS
@kitlangtonYouTubeGitHub
ASSORTED PROJECTS
Effect Institute
TUTORIAL
Interactive narrated lessons for Effect
Effect Solutions
TUTORIAL
Prescriptive guide for idiomatic Effect
Visual Types
TUTORIAL
Interactive TypeScript lessons
Visual Effect
TUTORIAL
Effect library visualizer
Effect Atom Examples
TUTORIAL
Interactive effect-atom examples
Hex — Voice to Text
APP
A free voice-to-text app for macOS
Void — Meditation Timer
APP
A minimal meditation timer for iOS
A Macro Almanac
TUTORIAL
A booklet on compile-time programming in Scala
OPEN SOURCE
Hex
2003
A free voice-to-text app for macOS
visual-effect
1120
Effect library visualizer
ghui
856
A GitHub TUI
effect-solutions
343
Prescriptive guide for idiomatic Effect
neotype
253
A friendly newtype library for Scala 3
zio-magic
253
Automatic ZIO Layer construction with compile-time hints
TYPESCRIPT & EFFECT VIDEOS
BECOME THE ENEMY — I Implemented JavaScript's Promise From Scratch and Then I Exploded
7.7K
643
BECOME THE ENEMY — I Implemented JavaScript's Promise From Scratch and Then I Exploded
Aug 22, 2025
Claude Code from Scratch with Effect
9.9K
745
Claude Code from Scratch with Effect
Aug 13, 2025
The Simple Secret Behind Effect’s Power
9.5K
763
The Simple Secret Behind Effect’s Power
Aug 5, 2025
POSTS
Effect and the Near Inexpressible Majesty of Layers
Jan 29, 2026
The Ovoid Conglomerate
Jan 13, 2025
Spare Thoughts on App Design
Jan 13, 2025
TALKS
Algebraic Effects from Scratch
Apr 10, 2024
ZIO App Architecture
Mar 17, 2022
Stockholm Syndrome Escape Velocity
Jan 25, 2021
Troll Driven Development: Implementing Functional Effects by Way of Self-Lobotomy
May 22, 2021
Happy Path Programming, Episode 31
Jun 11, 2021
SWIFT VIDEOS
Spring Animation from Scratch — Part 2 of 2
1.4K
56
Spring Animation from Scratch — Part 2 of 2
Oct 25, 2023
Spring Animation from Scratch — Part 1 of 2
4.0K
119
Spring Animation from Scratch — Part 1 of 2
Oct 16, 2023
What Are Result Builders?
3.5K
218
What Are Result Builders?
Sep 28, 2023
Kinetic, Interruptible Animations — SwiftUI Swipe Actions from Scratch — Part 2 of 2
2.5K
102
Kinetic, Interruptible Animations — SwiftUI Swipe Actions from Scratch — Part 2 of 2
Sep 20, 2023
Swipe Actions from Scratch — Part 1 of 2
3.5K
145
Swipe Actions from Scratch — Part 1 of 2
Sep 18, 2023
Swift Observation from Scratch — Part 2 of 2
1.2K
40
Swift Observation from Scratch — Part 2 of 2
Jul 4, 2023
Swift Observation from Scratch — Part 1 of 2
4.3K
187
Swift Observation from Scratch — Part 1 of 2
Jul 3, 2023
Swift Macros: Derive Any Wrappers
1.4K
63
Swift Macros: Derive Any Wrappers
Jun 24, 2023
Intro to Swift Macros — Automatic UI
8.7K
331
Intro to Swift Macros — Automatic UI
Jun 16, 2023
Building a Snippets App for macOS (from nil)
5.1K
228
Building a Snippets App for macOS (from nil)
Jan 13, 2021
Nontrivial SwiftUI Animation Bonanza
2.5K
161
Nontrivial SwiftUI Animation Bonanza
Jan 5, 2021
"Production" SwiftUI — Building a Better TextField — PART II
1.6K
85
"Production" SwiftUI — Building a Better TextField — PART II
Dec 28, 2020
"Production" SwiftUI — Building a Better TextField
2.7K
127
"Production" SwiftUI — Building a Better TextField
Dec 23, 2020
SCALA VIDEOS
Implementing a Macro-Based Test Stubbing Library — Computer Hour — Episode 2
1.1K
28
Implementing a Macro-Based Test Stubbing Library — Computer Hour — Episode 2
Jun 20, 2024
A Gentle Introduction to Scala 3 Macros — Computer Hour — Episode 1
2.0K
79
A Gentle Introduction to Scala 3 Macros — Computer Hour — Episode 1
Jun 14, 2024
A TOUR OF NEOTYPE
1.6K
80
A TOUR OF NEOTYPE
Mar 6, 2024
Compile-Time Time! — Data Transmogrification Macro From Scratch — Part 2
1.0K
42
Compile-Time Time! — Data Transmogrification Macro From Scratch — Part 2
Mar 12, 2023
Compile-Time Time! — Data Transmogrification Macro From Scratch — Part 1
2.1K
93
Compile-Time Time! — Data Transmogrification Macro From Scratch — Part 1
Mar 10, 2023
Vivisecting the Veil of Variance
1.5K
79
Vivisecting the Veil of Variance
Dec 22, 2022
A Good Local Dependency Workflow
581
30
A Good Local Dependency Workflow
Jul 7, 2022
Ten-Step Tail-Rec Transformation Technique
494
31
Ten-Step Tail-Rec Transformation Technique
May 21, 2022
ZIO App Architecture by Kit Langton
8.1K
254
ZIO App Architecture by Kit Langton
Apr 2, 2022
Implicits for Hypothetical Babies
1.1K
61
Implicits for Hypothetical Babies
Dec 16, 2021
I Can Has? (And So Can You!) — Exploring ZIO's Has Type
2.7K
128
I Can Has? (And So Can You!) — Exploring ZIO's Has Type
Apr 20, 2021
ZIO WORLD - ZLayer by Kit Langton
5.5K
134
ZIO WORLD - ZLayer by Kit Langton
Apr 16, 2021
Deriving the Frontend — Form Combinator Fun with Scala.js
4.9K
164
Deriving the Frontend — Form Combinator Fun with Scala.js
Mar 29, 2021
Kit Langton - Troll Driven Development: Implementing Functional Effects by Way of Self-Lobotomy
2.7K
108
Kit Langton - Troll Driven Development: Implementing Functional Effects by Way of Self-Lobotomy
Apr 16, 2021
Stockholm Syndrome Escape Velocity by Kit Langton
6.3K
265
Stockholm Syndrome Escape Velocity by Kit Langton
Apr 16, 2021