title: Generate dynamic class name increment with HAML
body: <p>I'm  really new to HTML and I want to achieve the following thing:</p>
  
  <pre><code>&lt;div class="column_1"&gt;&lt;/div&gt;
  &lt;div class="column_2"&gt;&lt;/div&gt;
  &lt;div class="column_3"&gt;&lt;/div&gt;
  &lt;div class="column_4"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>I tried this one</p>
  
  <pre><code>  - (1..4).each do |i|
      .column #{i}
  </code></pre>
  
  <p>This generates the columns but the increment is in the content from the div and not part of the class name.</p>
  
  <p>Hope someone can help me to show me the correct way ;)</p>