CODEWITHSUNDEEP
gostruct
irom
irom

Reputation: 3606

how to modify struct fields in golang

I have example play.golang.org/p/Y1KX-t5Sj9 where I define method Modify() on struct User

type User struct {
  Name string
  Age int
}
func (u *User) Modify() {
  *u = User{Name: "Paul"}
}

in the main() I am defining struct literal &User{Name: "Leto", Age: 11} then call u.Modify(). That results in printing 'Paul 0' I like that struct field Name is changed , but what is the correct way to keep Age field ?

Upvotes: 57

Views: 69822

Answers (1)

Adrian
Adrian

Reputation: 46562

Just modify the field you want to change:

func (u *User) Modify() {
  u.Name = "Paul"
}

This is covered well in the Go tour which you should definitely read through, it doesn't take long.

Upvotes: 66

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