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diff --git a/src/stlplus/containers/triple.hpp b/src/stlplus/containers/triple.hpp
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+#ifndef STLPLUS_TRIPLE
+#define STLPLUS_TRIPLE
+////////////////////////////////////////////////////////////////////////////////
+
+//   Author:    Andy Rushton, from an original by Dan Milton
+//   Copyright: (c) Southampton University 1999-2004
+//              (c) Andy Rushton           2004-2009
+//   License:   BSD License, see ../docs/license.html
+
+//   Similar to the STL pair but with three elements
+
+////////////////////////////////////////////////////////////////////////////////
+#include "containers_fixes.hpp"
+
+namespace stlplus
+{
+
+  ////////////////////////////////////////////////////////////////////////////////
+  // the triple class
+
+  template<typename T1, typename T2, typename T3>
+  struct triple
+  {
+    typedef T1 first_type;
+    typedef T2 second_type;
+    typedef T3 third_type;
+
+    T1 first;
+    T2 second;
+    T3 third;
+
+    triple(void);
+    triple(const T1& p1, const T2& p2, const T3& p3);
+    triple(const triple<T1,T2,T3>& t2);
+  };
+
+  ////////////////////////////////////////////////////////////////////////////////
+  // creation
+
+  template<typename T1, typename T2, typename T3>
+  triple<T1,T2,T3> make_triple(const T1& first, const T2& second, const T3& third);
+
+  ////////////////////////////////////////////////////////////////////////////////
+  // comparison
+
+  template<typename T1, typename T2, typename T3>
+  bool operator == (const triple<T1,T2,T3>& left, const triple<T1,T2,T3>& right);
+
+  ////////////////////////////////////////////////////////////////////////////////
+
+} // end namespace stlplus
+
+#include "triple.tpp"
+#endif