A struct literal denotes a newly allocated struct value by listing the values of its fields.

You can list just a subset of fields by using the Name: syntax. (And the order of named fields is irrelevant.)

The special prefix & constructs a pointer to a newly allocated struct.

package main import "fmt"type Vertex struct {    X, Y int}var (    p = Vertex{1, 2} // has type Vertex    q = &Vertex{1, 2} // has type *Vertex    r = Vertex{X: 1} // Y:0 is implicit    s = Vertex{} // X:0 and Y:0)func main() {    fmt.Println(p, q, r, s)}

A Tour of Go Struct Literals