title: How to sort struct with multiple sort parameters?
body: <p>I have an array/slice of members:</p>
  
  <pre><code>type Member struct {
      Id int
      LastName string
      FirstName string
  }
  
  var members []Member
  </code></pre>
  
  <p>My question is how to sort them by <code>LastName</code> and then by <code>FirstName</code>.</p>