GoLang Value Sharing

value_sharing.go

package main

import (
	"net/http"

	"github.com/pkg/errors"
)

type User struct {
	Name  string
	Email string
}

func Fetch(u *User) error {
	resp, err := http.Get("url")
	if err != nil {
		return errors.Wrap(err, "network read error")
	}
	u.Name = "Abc"     // read from resp
	u.Email = "[email protected]" // read from resp
	return nil
}

func main() {
	var u User
	err := Fetch(&u)
	if err != nil {
		// handle err here
	}
	modifyEmail(&u)
}

func modifyEmail(u *User) {
	u.Email = "new Email"
}