Structs

Define a struct

A struct is a typed collection of fields.

type User struct {
	Name string
	Age  int
}

func main() {
	u := User{Name: "Ada", Age: 28}
	fmt.Println(u.Name)
}

Update fields

Use dot notation to read and write fields on a value.

u.Age = 29
fmt.Println(u)

Pointers to structs

Methods and helpers often take *User so they can modify the original.

func birthday(u *User) {
	u.Age++
}

birthday(&u)
fmt.Println(u.Age)

Struct tips

• Capitalize field names to export them from a package
• Use keyed literals (Name:) for clarity
• Zero value structs have zeroed fields
• Embed structs later for composition