Are there some practical examples that use Object::*
<p>I just heard of that there is a kind of type like this,a point to Object member. Here is it </p>

<pre><code>class Point{float x, y;};
float Point::*p2 = &amp;Point::x; 
</code></pre>

<p>but I haven't use before,and wonder some-body really use it.Do you have any experience of that?</p>
