9

Bugs

  • No significant bugs found in the visible portion of the code.

Optimizations

  • Simplify the Codable conformance by making AttachedImage conform directly to Codable instead of using a nested struct for encoding/decoding.
  • Consider using URL type instead of String for the url property for better type safety and validation.

Good points

  • Adheres to Swift's best practices with the use of public access control.
  • Smart use of Hashable and Sendable protocols suggesting immutability and safety in concurrent programming contexts.
  • Clear and straightforward initialization method.

Summary

The AttachedImage struct is well-designed with a focus on thread safety and immutability, as indicated by its conformance to Sendable and Hashable. The code is clean and concise, with only minor suggestions for improvement mainly around potential simplification and improved type safety.

Open source alternatives

  • Kingfisher: A powerful, pure-Swift library for downloading and caching images from the web.
  • SDWebImage: An asynchronous image downloader with cache support as a UIImageView category.