golang-structs-interfaces

To design clean Go interfaces and structs, keep interfaces small and segregated, ensure zero-value usefulness for structs, and use compile-time interface checks to maintain code maintainability.

Use embedding in Go structs when you need to promote fields and methods for composition, but choose named fields when you require explicit access and want to avoid method conflicts or fragile inheritance chains.

The best way to handle dependency injection in Go is to define small interfaces at the consumer level, accept interfaces as function parameters, and return concrete struct types to ensure flexible and maintainable code.

Choose pointer receivers in Go when methods need to mutate struct state or the struct is large, and use value receivers for small, immutable structs to ensure consistent receiver usage and avoid mutation side effects.

Compile-time interface checks in Go projects ensure that a concrete struct type explicitly satisfies an interface contract during compilation, catching missing method implementations early before runtime execution.

Yes, prefer Go generics over using the any type for flexible struct design because generics provide compile-time type safety and eliminate the need for unsafe type assertions when handling diverse data structures.