an> f, <a href="../FSharpx.DataStructures/BatchedQueue`1.htm">BatchedQueue&lt;a&gt;</a> q, <span title="FSharpx.DataStructures.State">State</span> state)</h4>
		<div class="content">applies a function to each element of the queue, threading an accumulator argument through the computation, right to left 



      
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	<div id="head``1" class="method">
		<h4><span title="FSharpx.DataStructures.a">a</span> <strong>head&lt;a&gt;</strong>(<a href="../FSharpx.DataStructures/BatchedQueue`1.htm">Bat