objc.io

We add the ability to pass annotations, like syntax highlighting information, through the pretty printer.

Episode 396 · Mar 08

We continue to work on our pretty printers to indent a Swift parameter list in various ways.

Episode 395 · Mar 01

We add a choice operator to our pretty printing library to generate the best output for a given column width.

Episode 394 · Feb 23

We begin implementing a pretty printing library based on an old Haskell paper.

Episode 393 · Feb 16

We show some more use cases for structural programming, like generating random values.

Episode 384 · Dec 08 2023

We adapt our existing macros to support the new separation between types and values.

Episode 383 · Dec 01 2023

We restructure our library to separate the structure of types from their values.

Episode 382 · Nov 24 2023

We add support for enums to our structural programming library.

Episode 381 · Nov 17 2023

We use our structural programming library to generate SwiftUI forms for arbitrary structs.

Episode 380 · Nov 10 2023

We use Swift macros to generate the structural representation of structs.

Episode 379 · Nov 03 2023

We introduce a concept called structural programming and take the first steps toward an implementation.

Episode 378 · Oct 27 2023

In the last episode of this series, we implement the writing of trees and commits.

Episode 361 · Jun 30 2023

After having parsed blobs, trees, and commits, we now implement writing data, starting with blobs.

Episode 360 · Jun 23 2023

We parse Git commits, including the commit message and multiline metadata.

Episode 359 · Jun 16 2023

We add parsing of trees to our Swift Git implementation.

Episode 358 · Jun 02 2023

We implement Git's data structure in Swift, starting with blobs.

Episode 357 · May 26 2023

We conform our CRDT sequence to multiple collection protocols and use it for syncing a simple to-do app.

Episode 301 · Apr 22 2022

We add the ability to delete elements from our CRDT sequence and test the behavior for correctness.

Episode 300 · Apr 15 2022

We change the backing storage of our CRDT sequence from a tree to an array for efficiency.

Episode 299 · Apr 08 2022

We implement and test the merge algorithm for our tree-backed sequence data type.

Episode 298 · Apr 01 2022

We start building a replicated sequence data type, modeling the sequence as a tree.

Episode 297 · Mar 25 2022

After adding more testing to our CRDTs, we integrate them into a small app.

Episode 296 · Mar 18 2022

We implement our second CRDT, a grow-only counter type, and test its behavior.

Episode 295 · Mar 11 2022

We begin to investigate Conflict-Free Replicated Data Types as a way to sync data across devices.

Episode 294 · Mar 04 2022

We implement a property wrapper to access values from our environment.

Episode 277 · Oct 22 2021

We add support for loops to our rule builder, and we implement a basic template infrastructure.

Episode 276 · Oct 15 2021

We implement a result builder that enables us to compose rules similar to SwiftUI views.

Episode 275 · Oct 08 2021

We mimic SwiftUI's environment design to pass values down the site rule hierarchy.

Episode 274 · Oct 01 2021

We show how we replaced our outdated Ruby website with a SwiftUI-inspired static site generator.

Episode 273 · Sep 24 2021

We switch to a bottom-up approach to render trees in a compact but symmetric fashion.

Episode 224 · Oct 09 2020

We experiment with different tree-drawing algorithms to produce readable and compact binary trees.

Episode 223 · Oct 02 2020

We combine the logic for parsing 64-byte chunks from the last episode to process entire files.

Episode 172 · Oct 04 2019

We experiment with porting the low-level approach of a super-fast JSON parsing library to Swift.

Episode 171 · Sep 27 2019

In our 100th episode we take questions from our viewers!

Episode 100 · May 12 2018

We continue to expand our experimental view binding mechanism to implement dark mode in our app.

Episode 74 · Nov 03 2017

We experiment with reactive view bindings that don't rely on runtime programming.

Episode 73 · Oct 27 2017

We build a reactive array type on top of the reactive list from episode #67 and implement a filter method.

Episode 69 · Sep 29 2017

We build a reactive linked list on top of reactive programming primitives. We implement a reduce method on this type, which does the minimum amount of work when the underlying data changes.

Episode 67 · Sep 15 2017

We refine the observation capabilities of our new data type.

Episode 63 · Aug 18 2017

We recap the tradeoffs between classes and structs and start implementation of our new type, leveraging Swift 4's keypaths.

Episode 61 · Aug 04 2017