Swift Attached Macros: Build a Real-World Member Macro from Scratch

You know the pattern: every Identifiable enum needs a computed id that returns case names. With associated values, it gets messy.

This macro solves it once.

What's covered:

• What attached macros are (and when to use them)
• Building @CaseIdentifiable from scratch
• Inspecting enum cases with SwiftSyntax
• Ignoring associated values automatically
• Generating a computed id: String property
• Testing the macro in a real project

Why it matters: Attached macros eliminate repetitive patterns. This one removes id boilerplate from every enum in your project.