writing-go

Idiomatic Go emphasizes simplicity through concrete types over `any`, private interfaces defined at the consumer, flat control flow with guard clauses, and explicit error handling. This approach produces readable, maintainable code aligned with Go's core design principles.

Wrap errors with context using `errors.Is` and `errors.As` to enable proper error inspection and handling downstream. This preserves error chains while allowing callers to check specific error types without nested conditionals.

Replace nested conditionals with guard clauses and early returns at function entry points. This reduces cognitive load, improves readability, and makes testing easier by eliminating deeply indented business logic paths.

Define private interfaces at the point of consumption within your package to enforce concrete implementations. This provides type safety, enables dependency injection, and prevents misuse of generic `any` types in public APIs.

Yes. Testify and mockery integrate with Go's testing framework to provide assertion helpers and automatic mock generation. Pair them with private interfaces and concrete types for testable, production-ready service layers.

Go's standard library provides robust, well-tested foundations for most tasks. A stdlib-first design minimizes external dependencies, reduces deployment complexity, and aligns with Go's philosophy of explicit, maintainable code.