Hasty Briefsbeta

Be Careful with Go Struct Embedding

5 hours ago
  • #Struct Embedding
  • #Programming
  • #Go
  • Go's struct embedding allows composing types by embedding one struct within another.
  • Example shows embedding `Position` and `Colour` in `Rectangle`, allowing direct access to embedded fields like `r.X`.
  • Demonstrates a potential ambiguity when embedding structs with the same field name (`URL` in `FooService` and `BarConnectionOptions`).
  • The code resolves the ambiguity by selecting the least nested field (`FooService.URL`), printing 'abc.com'.
  • Highlights the importance of caution when using struct embedding to avoid unintended behavior.