>,</span> <span class="identifier">d1</span><span class="special">,</span> <span class="identifier">d2</span><span class="special">);</span>
</pre>
<p>
            which provides a clear and comfortable syntax, more similar to the placeholder
            based syntax as exposed by <code class="computeroutput"><span class="identifier">printf</span></code>
            or <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">format</span></cod