main.go

package main

import (
	"fmt"

	"github.com/davecgh/go-spew/spew"
)

type Base1 struct {
	X *int
	Y *int
	Z Base2
}
type Base2 struct {
	A *int
	B Base3
}
type Base3 struct {
	C []Base4
}
type Base4 struct {
	D *int
}

func main() {
	a := 10
	b := 20
	c := 30
	d := Base4{&a}
	e := Base3{[]Base4{d, d}}
	nestedStruct := Base1{&a, &b, Base2{&c, e}}
	normalInt := 100
	var negativeVal32 int32 = -100
	var negativeVal64 int64 = -1e9
	var floatVal32 float32 = 230.2
	var floatVal64 float64 = 20011.23
	mapExample := map[string]interface{}{
		"name":    "John",
		"country": "USA",
	}
	//manual
	fmt.Println(nestedStruct)
	fmt.Println(*nestedStruct.X)
	fmt.Println(*nestedStruct.Y)
	fmt.Println(*nestedStruct.Z.A)
	fmt.Println(*nestedStruct.Z.B.C[0].D)
	fmt.Println("")
	//go-spew
	spew.Dump(nestedStruct) // or spew.Dump(&nestedStruct)
	spew.Dump(normalInt)
	spew.Dump(negativeVal32)
	spew.Dump(negativeVal64)
	spew.Dump(floatVal32)
	spew.Dump(floatVal64)
	spew.Dump(mapExample)
}