
<div class="document" id="swappable-iterator-concept">
<h1 class="title">Swappable Iterator Concept</h1>

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<p>A class or built-in type <tt class="docutils literal"><span class="pre">X</span></tt> models the <em>Swappable Iterator</em> concept
if, in addition to <tt class="docutils literal"><span class="pre