Get std::list by reference
<p>I have a <code>Poly3D</code> class in C++, which has a sole member: <code>list&lt;Point_3&gt;</code></p>

<pre><code>using namespace std;

struct Poly3D
{
public:
    Poly3D(const list&lt;Point_3&gt; &amp;ptList);


private:
    list&lt;Point_3&gt; ptList;

};
</code></pre>

<p>My question is, how to GET ( in the sense of C#) by reference, so that the same copy with be returned every time I access the <code>Poly3D.ptList</code>?</p>
