How to access fields and methods of an embedded struct in Go?

In Go, you can access fields and methods of an embedded struct by referring to them directly on the outer struct. Here's an example:

package main

import "fmt"

// Embedding a struct
type Person struct {
    name string
    age  int
}

// Defining a method on the embedded struct
func (p Person) GetName() string {
    return p.name
}

// Outer struct
type Employee struct {
    Person  // Embedded struct
    id   int
}

func main() {
    // Creating an instance of the outer struct
    emp := Employee{
        Person: Person{
            name: "John Doe",
            age:  30,
        },
        id: 123,
    }

    // Accessing fields of the embedded struct
    fmt.Println(emp.name) // Output: John Doe
    fmt.Println(emp.age)  // Output: 30

    // Accessing methods of the embedded struct
    fmt.Println(emp.GetName()) // Output: John Doe
}

In the example above, we have an Employee struct that embeds the Person struct. By initializing an instance of Employee and accessing its fields and methods, we can also access the fields and methods of the embedded Person struct directly using dot notation.