Swift Language
@SwiftLang
Swift is a general-purpose programming language that's fast, modern, safe, and a joy to write. Designed for all, developed in the open.
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🗞️ Swift 6.4 landed in September, with Swift Build as the default in SwiftPM, Subprocess 1.0, and more capable Embedded Swift. Plus Vapor turns 10 and Google releases official Google Cloud client libraries for Swift. Read the latest digest:
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Google: “[Swift] has matured into a viable systems and cloud language, pairing Rust-like data-race safety with predictable, reference-counted performance.” Announcing their Swift-based cloud SDK for backend services:
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Updates to swift-crypto that offer an expanded cross-platform feature set for apps relying on cryptography:
How does the debugger know exactly which Swift module your code came from? The upcoming Swift 6.4 release makes it more precise than ever, tracking the module path in debug info instead of looking it up by name, for faster and more reliable debugging.
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Lots of cross-platform Swift news this month. ElementaryUI brings Swift to the web, SwiftTUI brings state and animations to the terminal, and Swift on Windows keeps getting better. Read more in our latest digest:
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At last: a unified home for Swift documentation, pulling together the language reference, core libraries and tooling, and platform specifics into a single central home, no matter what you're building! Check it out and give us feedback:
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Circleback didn't port an app to Swift, instead using it as a portable systems layer that provides the connective tissue between an Electron UI and some underlying platform dependencies (ScreenCaptureKit on macOS, libobs on Windows). Interesting approach:
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Embedded Swift is a subset of Swift built for tiny, constrained hardware, with far smaller binaries while keeping the language you already know. Swift 6.4 brings it closer to full Swift than ever, supporting "any" types, untyped throws, and metatypes.
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What's the difference between a package index and a package registry? One helps you discover packages, the other hosts and serves them. 📦 A new post explains how they fit together. Read more:
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A busy summer for Swift continues. ☀️
In July:
• Task Stealers land in Swift Concurrency’s runtime.
• SwiftPM gets a package registry reference implementation.
• A talk about explicit ownership at PLDI 2026.
Read more:
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June was a big month for Swift: previews of Swift 6.4, Swift Package Index joining Apple, and a community project that brought Swift to a 1977 Apple II. Read more in our latest digest:
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Swift 6.3.3 is out now! 🔩 This maintenance release improves stability in the Swift REPL, concurrency, and key paths. More here:
Swift Package Index has become an essential part of the Swift ecosystem, and joining Apple strengthens it as it continues its mission. Learn more:
Memory-safe. 13% faster on average. ⚡️ The TrueType hinting interpreter in macOS and iOS has been rewritten in Swift, replacing the original C implementation. Pixel-perfect accuracy was validated across 27 million glyphs. And the results:
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A unified networking stack for Swift, layered from low-level I/O primitives, through common protocols, to a modern HTTP client and server API. ⚙️ That's what the new Networking workgroup is building. Interested in contributing? Join us:
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Training an LLM with Swift, with optimization techniques to match or exceed C performance. 🏎️ Plus Wasm updates, recently active Swift Evolution proposals, and a talk about the Temporal Swift SDK, in the latest edition of What’s New in Swift
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Need dynamic configuration for Swift services running on Kubernetes? Swift Configuration supports hot reloading, watching specific values, and more. Learn more on the CNCF blog:
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When you draw a stroke in Goodnotes on the web, you get the exact same curves and ink flow as on iPad, because it’s literally the same Swift code running on both. ✍️ Goodnotes engineer @kateinoigakukun shares how they built it with Swift and WebAssembly:
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Want to give back to the Swift community, or level up your open source skills? The 2026 Swift Mentorship Program is open! 🤝 Mentor others, or contribute to ANY Swift open source project as a mentee. Mentor surveys are due June 1! Learn more:
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Swift 6.3.2 is available! 🛠️ This maintenance release includes updates to Swift Package Manager and Swift Build, making it easier to load package resources on background threads. More here:
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