title: Unknown name of the following: class Foo::Bar
body: <p>I was reading a program in c++ and came across the following </p>
  
  <pre><code>class Foo::Bar
  {
     ...
  }
  </code></pre>
  
  <p>I have been researching different methods of class implementation but have not come across the :: when creating a class.  Do you know the name of it so I can look it up?</p>
  
  <p>Foo is a full size class, not a namespace.  I do not know what Bar is.</p>
  
  <p>Thank you</p>