About SwiftQA

SwiftQA is a reference of Swift and iOS interview questions, each answered in depth with worked code examples rather than a one-line definition.

How it is built

Each question is a markdown file. The site is generated as static HTML and served from Cloudflare's edge network. We don't track you ourselves — any analytics here is aggregate and cookieless. This site does run Google's advertising script, which can set its own cookies; see our privacy policy for details.

Corrections

Swift changes quickly and some of these answers describe behaviour that will shift across releases. If something here is wrong or out of date, please get in touch.