sign">'</span>a,&nbsp;<span class="constructor">Buffer</span>.t,&nbsp;unit)&nbsp;<span class="constructor">Pervasives</span>.format&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;ifprintf&nbsp;:&nbsp;<span class="keywordsign">'</span>a&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;(<span class="keywordsign">'</span>b,&nbsp;<span class="keywordsign">'</span>a,&nbsp;unit)&nbsp;<span class="constructor">Pervasives</s