</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;from&nbsp;:&nbsp;(int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a&nbsp;option)&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a&nbsp;<span class="constructor">Stream</span>.t<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;of_list&nbsp;:&nbsp;<span class="keywordsign">'</span>a&nbsp;list&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keyw