golang-idioms

---
name: golang-idioms
description: Idiomatic Go patterns for error handling, interfaces, concurrency, testing, and module management
---

# Go Idioms

## Error Handling

```go
// Return errors, never panic in library code
func LoadConfig(path string) (Config, error) {
    data, err := os.ReadFile(path)
    if err != nil {
        return Config{}, fmt.Errorf("reading config %s: %w", path, err)
    }

    var cfg Config
    if err := json.Unmarshal(data, &cfg); err != nil {
        return Config