title: Inline Comparer
body: <p>I have a class Person with a Name property.
  I have a collection of persons.
  I have a method to add a new person but I need to check of the collection already contains the person.</p>
  
  <p>I would like to use <code>coll.Contains(newPerson,[here is the comparer])</code> where the comparer will make the comparison on the name property.
  Is it possible to make the comparison inline (anonymously) without creating a new class implementing IEqualityComparer?</p>