title: Parsing Expression Tree with BinaryExpression AND
body: <p>I'm just in the early process of learning about expression trees.</p>
  
  <p>As far as I understand, the good thing about them is that they can be parsed when they are used as parameters, so for instance:</p>
  
  <pre><code>Foo.Bar(x =&gt; x.Process == "On" &amp;&amp; x.Name == "Goofy")
  </code></pre>
  
  <p>But how can I parse the expression when there is AND inside?</p>
  
  <p>Maybe I've misunderstood it all, but then I can't see the reason for using expressions? I've now looked at nearly hundreds of websites that all try to explain what an expression tree are and they all succeeded, expect they never explained what the use was - except the trivial explanation "An expression tree is not compiled...."</p>