mart-ptr</em></a>&lt;U&gt;</span> x );</tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal">push_front( x.release() );</tt></li>
</ul>
</blockquote>
</li>
</ul>
<!-- - ``void push_front( const T& x );``

- Effects: push_front( allocate_clone( x ) );

- Exception safety: Strong guarantee -->
<ul>
<li><p class="first"><tt class="docutils literal">auto_type <span class="pre">pop_front():</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements:<tt class="docutils literal