"How to" write and read from temp file.

ReadAndWriteFromTempFile

package main

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

//todo Sync it's important!!!! file.Sync()
func main()  {
	fmt.Println("Try to create temp file");
	file, createFileErr := ioutil.TempFile(os.TempDir(), "tempFilePrefix");
	check("Failed to create temp file", createFileErr);
	fmt.Println("Temp file successfully created.")
	defer func() {
		file.Close();
		os.Remove(file.Name())
	}()

	d1 := []byte("some test text for file")
	writeToFileError := ioutil.WriteFile(file.Name(), d1, 0644)
	file.Sync()
	check("Failed to write information to File", writeToFileError)

	fmt.Println("temp file path", file.Name())
	reader := ioutil.NopCloser(file);
	defer reader.Close()

	buffer, readErr := ioutil.ReadAll(file);
	if readErr != nil {
		check("Failed to read inforation from file", readErr)
	}

	fmt.Println(string(buffer))

	fmt.Println("Read from file completed", reader)
}

func check(message string, e error) {
	if e != nil {
		fmt.Errorf(message)
		panic(e)
	}
}