Source file of wiki part1.go

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build ignore

package main

import (
    "fmt"
    "os"
)

type Page struct {
    Title string
    Body  []byte
}

func (p *Page) save() error {
    filename := p.Title + ".txt"
    return os.WriteFile(filename, p.Body, 0600)
}

func loadPage(title string) (*Page, error) {
    filename := title + ".txt"
    body, err := os.ReadFile(filename)
    if err != nil {
        return nil, err
    }
    return &Page{Title: title, Body: body}, nil
}

func main() {
    p1 := &Page{Title: "TestPage", Body: []byte("This is a sample Page.")}
    p1.save()
    p2, _ := loadPage("TestPage")
    fmt.Println(string(p2.Body))
}