Golang : Flush and close file created by os.Create and bufio.NewWriter example



Tags : golang bufio-newwriter os-create flush close-file

Whenever a new file is created by os.Create() function and data being written to the file with bufio.NewWriter(). It is a good practise to flush all the data from memory to the file before closing the file. This is to ensure that the write is complete and no corruption at the file level.

For instance :

 package main

 import (
  "bufio"
  "fmt"
  "os"
 )

 func main() {
  file, _ := os.Create("result.txt")

  defer file.Close() // don't forget to defer close!

  fileWriter := bufio.NewWriter(file)
  fmt.Fprint(fileWriter, "Hello, ")
  fmt.Fprint(fileWriter, "world! 你好世界!\n")
  fileWriter.Flush() // Don't forget to flush!

 }

Reference :

https://www.socketloop.com/references/golang-bufio-newwriter-function-example



Tags : golang bufio-newwriter os-create flush close-file

By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


Helping out