interfaces.xml

<?xml version="1.0" encoding="utf-8"?>
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<part xml:id="spl.interfaces" xmlns="http://docbook.org/ns/docbook">
 <title>Interfaces</title>

 <partintro>
  <simpara>
   SPL provides a set of interfaces to enhance iterators,
   and a pair of interfaces to implement the Observer Design Pattern.
  </simpara>

  <section role="seealso">
   &reftitle.seealso;
   <simplelist>
    <member><xref linkend="reserved.interfaces"/></member>
   </simplelist>
  </section>

 </partintro>

 &reference.spl.outeriterator;
 &reference.spl.recursiveiterator;
 &reference.spl.seekableiterator;
 &reference.spl.splobserver;
 &reference.spl.splsubject;

</part>
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