golang simple read write file example

This article illustrates a simple way for golang to read and write files. I will share it with you for your reference as follows:

Here's how golang can read and write files:

package main

import (

    "fmt"

    "os"

)

func main() {

    f, err := os.OpenFile("file2.txt", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0x644)

    if err != nil {

        panic(err)

    }

    defer f.Close()

    wint, err := f.WriteString("helloworld")

    if err != nil {

        panic(err)

    }

    fmt.Printf("%d\n", wint)

    _, err = f.Seek(0, 0)

    if err != nil {

        panic(err)

    }

    bs := make([]byte, 100)

    rint, err := f.Read(bs)

    if err != nil {

        panic(err)

    }

    fmt.Printf("%d, %s\n", rint, bs)

}

I hope this article has been helpful to you in the programming of Go language.