tionality is instead implemented in the <code>llists_utils</code> module.
<h2><a name="types">Data Types</a></h2>

<h3 class="typedecl"><a name="type-accumulator">accumulator()</a></h3>
<p><tt>accumulator() = any()</tt></p>


<h3 class="typedecl"><a name="type-combine">combine()</a></h3>
<p><tt>combine(A, B, Out) = fun((A, B) -&gt; Out)</tt></p>


<h3 class="typedecl"><a name="type-combine3">combine3()</a></h3>
<p><tt>combine3(A, B, C, Out) = fun((A, B, C) -&gt; Out)</tt></p>


<h3 class="typedecl"><a name=