package main

import (
	"fmt"
	"net/http"
	"os"
)

func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "Hello, you've requested: %s\n", r.URL.Path)
	})

	http.ListenAndServe(":80", nil)

	file, err := os.Create("writeAt.txt")

	if err != nil {
		panic(err)
	}
	defer file.Close()
	file.WriteString("Golang中文社区——这里是多余")
	n, err := file.WriteAt([]byte("Go语言中文网"), 24)
	if err != nil {
		panic(err)
	}
	fmt.Println(n)
}