CopyN in Go

Posted by GoDoc
Public (Editable by Users)

CopyN copies n bytes (or until an error) from src to dst. It returns the number of bytes copied and the earliest error encountered while copying. On return, written == n if and only if err == nil.

Go
Edit 
package main

import (
	"io"
	"log"
	"os"
	"strings"
)

func main() {
	r := strings.NewReader("some io.Reader stream to be read")

	if _, err := io.CopyN(os.Stdout, r, 5); err != nil {
		log.Fatal(err)
	}
}