How are member types implemented?
<p>I'm looking at this resource:</p>

<p><a href="http://www.cplusplus.com/reference/vector/vector/" rel="nofollow">http://www.cplusplus.com/reference/vector/vector/</a></p>

<p>For example, the iterator <em>member type</em> on class vector.</p>

<p>Would a "member type" simply be implemented as a typedef or something similar in the vector class? It is not clear to me what "member type" actually means, and I've looked at a couple C++ textbooks, they don't even mention this phrase at all.</p>
