cial>{
        </span><span class=keyword>if</span><span class=special>( </span><span class=identifier>begin </span><span class=special>== </span><span class=identifier>end </span><span class=special>)
            </span><span class=keyword>throw </span><span class=identifier>std</span><span class=special>::</span><span class=identifier>range_error</span><span class=special>( </span><span class=string>&quot;range error: &lt;range_inserter&gt;&quot; </span><span class=special>);
        </span><span class=sp