OOP Semantics

oop_semantics.go

package user

import (
	"io"
)

type User struct {
	Name  string
	Email string
}

type UserRepository interface {
	Read() ([]User, error)
	Write([]User) error
}

type defaultUserRepository struct {
	rdr io.Reader
	wtr io.WriteCloser
}

func (u *defaultUserRepository) Read() ([]User, error) {
	// read using reader u.rdr 
	//u.rdr.Read()
	return []User{}, nil
}

func (u *defaultUserRepository) Write(usr []User) error {
	// write using u.wtr
	//u.wtr.Write(...)
	return nil
}

func CreateUserRepository(r io.Reader, w io.WriteCloser) UserRepository {
	repo := defaultUserRepository{
		rdr: r,
		wtr: w,
	}
	return &repo
}