As we know, fields start with capital letters are public, and those are not are private. But Golang also support anonymous field. For example:

type myType struct {
  string
}

These fields are design for Embedding. But is this field public or private?

>Solution :

If the typename of the embedded type is lower case, it has package visibility. For example:

type T struct {
    string
}

func main() {
    x := T{}
    x.string = "a"
    fmt.Println(x)
}

However if you move type T to another package p:

package p

type T struct {
  string
}

package main

import "testmod/p"

func main() {
    x := p.T{}
    x.string = "a" // Error
}