title: how to use index inside range in html/template to iterate through parallel arrays?
body: <p>I'm executing a template with 2 parallel arrays (same size) and I want to list items from both arrays in parallel, how do I use index inside of range?</p>
  
  <p>this obviously doesn't work:</p>
  
  <pre><code>{{range $i, $e := .First}}$e - {{index .Second $i}}{{end}}
  </code></pre>