title: ActionBar setDisplayHomeAsUpEnabled(true) vs setDisplayShowHomeEnabled(true). What's the difference?
body: <p>The title is pretty much self explanatory. What are the exact differences? I'll post sample code below.</p>
  
  <pre><code>actionbar = getSupportActionBar();
  actionbar.setDisplayHomeAsUpEnabled(true);
  actionbar.setDisplayShowHomeEnabled(true);
  </code></pre>