Using Swift macros for better DX

Mon, 12 May 2025 00:00:00 +0200

When migrating our app to become Swift 6 compatible, I took the opportunity to take a look into Swift macros, since our storage helper had a lot of duplicate boilerplate code.

Using macros

Mapping API data models to Core Data models included a lot of (almost) duplicate code for every method: calling code in the correct context, fetching existing (or creating new) models, saving context, etc.

I created a macro which smooths out this process, while still being type-safe. This is what a mapping method looks like:

SwiftUI iOS list styles (with images)

Mon, 02 Oct 2023 09:17:48 +0200

Introduction

SwiftUI provides multiple styles for list, but it might not always be obvious what difference there are between them.

This is a comparison grid of all iOS list styles, described in [STYLES]. The code for the list is written out at the bottom of the page.

Comparisons

.plain

.inset

.grouped

.insetGrouped

.sidebar

Code

List {
 Section {
 Text("Apple")
 Text("Banana")
 } header: {
 Text("Favorites")
 } footer: {
 Text("The fruits which are most tasty")
 }

 Section {
 Text("Orange")
 }
}

References

[STYLES]: Apple Inc., ListStyle, Apple Developer Documentation