../dart-core/Set/add.html">add</a>, <a href="../dart-core/Set/contains.html">contains</a>, <a href="../dart-core/Set/remove.html">remove</a>, and <a href="../dart-html/CssClassSet/length.html">length</a>, provided the hash
codes of objects are well distributed.</p>
<p>The iteration order of the set is not specified and depends on
the hashcodes of the provided elements. However, the order is stable:
multiple iterations over the same set produce the same order, as long as
the set is not modified.</p>
    </se