About

Swift Performance is a collection of in-depth articles on writing faster Swift code. The focus is practical and measurable. Every claim is backed by profiler data, compiler output, or XCTest benchmarks.

Topics include ARC and memory management, value vs. reference types, dynamic dispatch elimination, Swift concurrency, collections, generics, whole-module optimization and many others.

Written by Paraipan Sorin, an iOS Engineer with experience on Firefox for iOS.