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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<p>The <code>Struct</code> concept represents <code>struct</code>-like user-defined types. </p>
<p>The <code>Struct</code> concept allows restricted compile-time reflection over user-defined types. In particular, it allows accessing the names of the members of a user-defined type, and also the value of those members. <code>Struct</code>s can also be folded, searched and converted to some types of containers, w