Swift Language Expertise

Overview

Idiomatic, production-grade Swift 6: SwiftPM packages, value semantics, optionals, protocol-oriented generics, and structured concurrency under strict data-race checking. Assumes the reader knows the syntax. The value is in what is easy to get wrong: protocol-extension dispatch, actor reentrancy, Sendable escape hatches, continuation misuse, Codable defaults, and two test frameworks that share one swift test command.

Tooling

SwiftPM is the build tool and package manager. Xcode projects (.xcodeproj) build with xcodebuild; keep libraries in a SwiftPM package even when an app wraps them, so they build and test on Linux and in CI without a simulator.