title: Syntax error, unexpected tIVAR, expecting '('
body: <p>Using the following line of code I'm trying to insert a tuple into the <code>@test_results</code> array of the <code>@test_object</code>:</p>
  
  <pre><code>@test_object.@test_results &lt;&lt; [@u, @m, @r, @p]
  </code></pre>
  
  <p>But it raise the following error:</p>
  
  <pre class="lang-none prettyprint-override"><code>unexpected tIVAR, expecting '(' (SyntaxError)
  </code></pre>
  
  <p>Why is Ruby expecting '('?</p>