Comparing generic lists and filter mismatching values
<p>I would like to compare to generic lists, and filter the mismatching values. I'm currently using a foreach loop, but I would like to know if there is a way to solve this using a lambda expression? In the example below i would like a resulting list that only contains the "4".</p>

<pre><code>List&lt;string&gt; foo = new List&lt;string&gt;() { "1", "2", "3" };
List&lt;string&gt; bar = new List&lt;string&gt;() { "1", "2", "3", "4" };
</code></pre>
