Go Nullable with Generics

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Package gonull provides a generic Nullable type for handling nullable values in a convenient way. This is useful when working with databases and JSON, where nullable values are common. Unlike other nullable libraries, gonull leverages Go’s generics feature, enabling it to work seamlessly with any data type, making it more versatile and efficient.

Why gonull

  • Use of Go’s generics allows for a single implementation that works with any data type.
  • Seamless integration with database/sql and JSON marshalling/unmarshalling.
  • Reduces boilerplate code and improves code readability.
type Person struct {
	Name    string
	Age     int
	Address gonull.Nullable[string]
}

func main() {
	jsonData := []byte(`{"Name":"Alice","Age":30,"Address":null}`)

	var person Person
	err := json.Unmarshal(jsonData, &person)
	if err != nil {
		panic(err)
	}
	fmt.Printf("Unmarshalled Person: %+v\n", person)

	marshalledData, err := json.Marshal(person)
	if err != nil {
		panic(err)
	}
	fmt.Printf("Marshalled JSON: %s\n", string(marshalledData))
}