Tour of Go 2.0

Struct Literals

A struct literal creates a new struct value inline by listing its fields.

You can name each field explicitly using Name: value syntax — order doesn’t matter, and any fields you leave out default to zero. Or skip the names and list values positionally.

Prefix with & to get a pointer to the struct instead of a copy.

main.go ▶ Run in Playground 
package main

import "fmt"

type Vertex struct {
	X, Y int
}

var (
	v1 = Vertex{1, 2}  // has type Vertex
	v2 = Vertex{X: 1}  // Y:0 is implicit
	v3 = Vertex{}      // X:0 and Y:0
	p  = &Vertex{1, 2} // has type *Vertex
)

func main() {
	fmt.Println(v1, p, v2, v3)
}