go read write example

read_write.go

package main

import (
	"fmt"
	"os"
	"bufio"
	"io/ioutil"
)

type Page struct {
	Title string
	Body []byte
}

func (p *Page) save() {
	title := p.Title
	outFile, outErr := os.OpenFile(title, os.O_WRONLY|os.O_CREATE, 0666)
	if outErr != nil {
		fmt.Println("open/create file error")
		return
	}

	defer outFile.Close()

	outWritter := bufio.NewWriter(outFile)
	s := string(p.Body[:])
	outWritter.WriteString(s)
	outWritter.Flush()
}

func (p *Page) save1() (err error) {
	return ioutil.WriteFile(p.Title, p.Body, 0666)
}

func load(title string) {
	input, err := os.Open(title)
	if err != nil {
		fmt.Println("read error")
		return
	}

	fmt.Println(input)
}

func (p *Page) load1(title string) (err error) {
	p.Title = title
	p.Body, err = ioutil.ReadFile(p.Title)
	return err
}

func main() {
	var p *Page = new(Page)
	p.Title = "hello.csv"
	p.Body = []byte("hskfjksfhkshfjshckjnhkjdfhj")
	p.save()
	load(p.Title)

	page := Page{
		"page.csv",
		[]byte("huge page ..."),
	}

	page.save1()

	var new_page Page
	new_page.load1("page.csv")
	fmt.Println(string(new_page.Body))

}