title: How do I join array into a string in ARM template?
body: <p>I have ARM template parameter which is string array (like below). How do I create variable which will be a type of <code>string</code> which is <code>join</code> of those values, that is <code>&quot;dominos&quot;,&quot;boeing&quot;</code>?</p>
  <pre><code>&quot;parameters&quot;: {
        &quot;clientObject&quot;: {
          &quot;value&quot;: [
              &quot;dominos&quot;,
              &quot;boeing&quot;
           ]
        }
     }
  </code></pre>