SE-0343 upgrades Swift’s support for top-level code – think main.swift in a macOS Command Line Tool project – so that it supports concurrency out of the box. This is one of those changes that might seem trivial on the surface, but took a lot of work to make happen.
In practice, it means you can write code like this directly into your main.swift files:
import Foundation let url = URL(string: "https://hws.dev/readings.json")! let (data, _) = try await URLSession.shared.data(from: url) let readings = try JSONDecoder().decode([Double].self, from: data) print("Found \(readings.count) temperature readings")
Previously, we had to create a new
@main struct that had an asynchronous
main() method, so this new, simpler approach is a big improvement.
SPONSORED In-app subscriptions are a pain to implement, hard to test, and full of edge cases. RevenueCat makes it straightforward and reliable so you can get back to building your app. Oh, and it's free if your app makes less than $10k/mo.
Link copied to your pasteboard.