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<td><a href="../../Contents/1/234.html">Pair&lt;T0, T1&gt;</a></td>
<td>A 2-element tuple type.</td>
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<td><a href="../../Contents/1/235.html">Quad&lt;T0, T1, T2, T3&gt;</a></td>
<td>A 4-element tuple type.</td>
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<td><a href="../../Contents/1/236.html">Ref&lt;T&gt;<