when c++ standard introduces the suppose of the syntax `vector<vector<int>>` (i.e. `>>` in the end?
<pre><code>include &lt;vector&gt;

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    vector&lt;vector&lt;int&gt;&gt; vecVecInts;

    return 0;
}
</code></pre>

<p>I have turned off Visual Studio 2008 language extension and compiled the above code without warning or errors.</p>

<p>I used to remember that we have to replace the following line</p>

<pre><code>vector&lt;vector&lt;int&gt;&gt;
</code></pre>

<p>with</p>

<pre><code>vector&lt;vector&lt;int&gt; &gt;
</code></pre>

<p>because the compiler at that time doesn't recognize the <code>&gt;&gt;</code> in the end.</p>

<p><strong>Question</strong>> When does C++ standard introduce this syntax sweeter?</p>

<p>Thank you</p>
