&gt; T?) -&gt; UnfoldFirstSequence&lt;T&gt;</code>
    
    
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<div class="declaration" id="func-sequence-t-state_-state-next_-escaping-inout-state-t">
<a class="toggle-link" data-toggle="collapse" href="#comment-func-sequence-t-state_-state-next_-escaping-inout-state-t">func sequence&lt;T, State&gt;(<wbr>_:<wbr> State, next: @escaping (inout State) -&gt; T?)</a>
        
<div class="comment collapse" id="comment-func-sequence-t-state_-state-next_-escaping-inout-state-t"><div class="p">
  