Passing dependency container struct by value or reference

[gofrmqueaskbostnanal (gother)]

Hi,

I am just wondering which practise below is right way. By the way receiving functions won’t modify the container.

Thanks

type Container struct {
	Version  string
	Shutdown time.Duration

	SomeStructA StructA
	SomeStructB *StructB

	DB     *sql.DB
	SRV    *http.Server
	AWSS3  *s3.S3
	AWSSES *session.Session
}

func main() {
	con := Container{ /* Assume that all fields are populated here */ }

	a(con) // Pass by value
	// OR
	b(&con) // Pass by reference
}

func a(Container)  {}
func b(*Container) {}

[Yamil_Bracho]

I think this article gives you a good insight (When to use pointers in Go. One of my pet peeves is finding places… | by Dylan Meeus | Medium)

[luk4z7 (Lucas Alves)]

this links will help you

Beginner Question: Structs, Methods, Pointers

I am going through a udemy course, and I had a question about pointers that the teacher isn’t discussing. I understand pointers, memory addresses, and the contents thereof. I understand you might want to use a pointer if you want to modify the struct (in this case) in place, rather than modify a copy. Refer to this code… type person struct { first string last string } func (p *person) changeMeMethod() { (*p).first = "Jo" } func changeMeFunc(p *person) { (*p).first = "Flem" } func main…

https://dave.cheney.net/2017/04/29/there-is-no-pass-by-reference-in-go