Concatenating a string with writer

Besides the built-in + operator, there are more ways to concatenate the string. This recipe will describe the more performant way of concatenating strings with the bytes package and the built-in copy function.

How to do it...

1. Open the console and create the folder chapter02/recipe04.
2. Navigate to the directory.
3. Create the concat_buffer.go file with the following content:

       package main

       import (
         "bytes"
         "fmt"
       )

       func main() {
         strings := []string{"This ", "is ", "even ",
                             "more ", "performant "}
          buffer := bytes.Buffer{}
          for _, val...