Table of Contents

• Basics of struct

Basics of struct tutorial

type Developer struct {
    Name string
    Age  int
}

// By default, fields are initialized with zero values of their own types.
var devloper Developer
developer.Name = "Yeongho Kim"
developer.Age = 32

var pdev *Developer = &developer
pdev.Age += 1
// equivalent to
(*pdev).Age += 1

• Field order is significant to type identity.
• Fields are exported if the field's name begins with a capital letter.
• A struct named S cannot have a filed of type S itself, but it can have its pointer, *S.
• The empty struct{}'s size is zero.

type Point struct {
    X, Y int
}

p1 := Point{1, 2}
p2 := Point{X: 1, Y: 2}

// shorthand notation for pointers
var pp *Point
pp := &Point{1, 2}

• Fields with no initial value will be initialized with its zero value.

type Point struct{ X, Y int }
p := Point{1, 2}
q := Point{2, 1}

// If all fields are comparable, the ~struct~ itself is also comparable.
fmt.Println(p == q) // false

type Point struct{ X, Y int }

type Circle struct {
    Point // Anonymous Fields
    Radius int
}

var c Circle
c.X
// equivalent to
c.Point.X

type Rect struct {
    Point
    Point // error! You cannot embed the same type twice
}