title: How to recursively join a string to an array of type string in golang
body: <p>I am struggling with this for quite some time. I basically want to create a function that recursively join a string to an array.</p>
  
  <p>Like this : </p>
  
  <blockquote>
    <p>join ", " ["one","two","three"]
       should look like this  "one, two, three"</p>
  </blockquote>