rs&lt;S&gt;()</code> is a <code>Sequence</code> of <code>Product</code>s where the first element of each pair is the "name" of a member of the <code>Struct</code>, and the second element of each pair is a function that can be used to access that member when given an object of the proper data type. As described in the global documentation for <code>Struct</code>, the accessor functions in this sequence must be move-independent.  <a href="group__group-Struct.html#ga983a55dbd93d766fd37689ea32e4ddfb">More...</a