Swift Concurrency

Comprehensive guide to Swift 6 strict concurrency, async/await patterns, actors, and modern thread-safe programming for iOS 26 and macOS Tahoe.

Prerequisites

• Swift 6.x with strict concurrency enabled
• Xcode 26+

Swift 6 Concurrency Model

Complete Concurrency Checking

Swift 6 enables complete data-race safety by default. The compiler statically verifies that your code is free from data races.