package main

import (
	"fmt"
	"unsafe"
)

type object struct {
	f float64
	i int32
}

func main() {
	obj := &object{
		f: 1.0,
		i: 1,
	}
	f := (*float64)(unsafe.Pointer(obj))
	fmt.Println(*f)                                       //1
	fmt.Println(unsafe.Pointer(obj) == unsafe.Pointer(f)) //true
}