<p>Suppose <code>foo</code> is an inflated timestamp column and <code>$row-&gt;foo</code> is set to a true DateTime (representing a date, say, 2016-06-23T16:42:34).  In the present code, these two code snippets:</p>

<pre><code>$row-&gt;set_inflated_column(foo =&gt; undef);
say 'The value is: '.$row-&gt;get_column('foo');
say 'The value is: '.$row-&gt;foo;

$row-&gt;set_inflated_columns({ foo =&gt; undef, });
say 'The value is: '.$row-&gt;get_column('foo');
say 'The value is: '.$row-&gt;foo;
</code></pre>

<p>would do different things.  The first prints</p>

<pre><code>The value is: 
The value is: 
</code></pre>

<p>the second prints</p>

<pre><code>The value is: 
The value is: 2016-06-23T16:42:34
</code></pre>

<p>Because <code>update</code> uses <code>set_inflated_columns</code>, the same behavior is visible there.</p>

<p>This change makes <code>set_inflated_columns</code> call <code>set_inflated_column</code> when the column is inflated and new value is <code>undef</code> (which <code>set_inflated_column</code> handles correctly), which causes the two functions to behave identically in this case, which seems like the correct behavior.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>&nbsp;&nbsp;<a href='https://github.com/dbsrgits/dbix-class/pull/106'>https://github.com/dbsrgits/dbix-class/pull/106</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Treat undef like blessed objects for the purpose of looking for special handling</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/dbsrgits/dbix-class/pull/106/files#diff-0">lib/DBIx/Class/Row.pm</a>
    (2)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/dbsrgits/dbix-class/pull/106.patch'>https://github.com/dbsrgits/dbix-class/pull/106.patch</a></li>
  <li><a href='https://github.com/dbsrgits/dbix-class/pull/106.diff'>https://github.com/dbsrgits/dbix-class/pull/106.diff</a></li>
</ul>

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