</span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span><span class="w"> </span><span class="p">},</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span><span class="w">  </span>

<span class="c1">// now - users are responsible of wrapping the arumgnets into a callable</span