How to embed a pointer to a struct in another struct in Go?

To embed a pointer to a struct in another struct in Go, you can simply declare a pointer field in the outer struct that has the type of the inner struct. Here's an example:

package main

import "fmt"

type InnerStruct struct {
    Field1 int
    Field2 string
}

type OuterStruct struct {
    Inner *InnerStruct
}

func main() {
    inner := &InnerStruct{
        Field1: 42,
        Field2: "Hello",
    }

    outer := &OuterStruct{
        Inner: inner,
    }

    fmt.Println(outer.Inner.Field1) // Accessing a field of the inner struct through the outer struct
}

In the example above, OuterStruct has a pointer field Inner that points to an instance of InnerStruct. To embed the pointer to InnerStruct in the OuterStruct, declare the Inner field as a pointer to InnerStruct (*InnerStruct).

You can then create an instance of InnerStruct and assign its pointer to the Inner field of OuterStruct (using the & operator). Finally, you can access the fields of the inner struct through the outer struct as demonstrated in the fmt.Println statement.