comparison operator

src/OpenFOAM/containers/HashTables/HashSet/HashSet.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef HashSet_C
+#define HashSet_C
+
+#include "HashSet.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
+
+template<class Key, class Hash>
+bool HashSet<Key, Hash>::operator==(const HashSet<Key, Hash>& ht) const
+{
+    const HashTable<empty, Key, Hash>& a = *this;
+
+    // Are all my elements in ht?
+    for
+    (
+        typename HashTable<empty, Key, Hash>::const_iterator iter = a.begin();
+        iter != a.end();
+        ++iter
+    )
+    {
+        if (!ht.found(iter.key()))
+        {
+            return false;
+        }
+    }
+
+    // Are all ht elements in me?
+    for
+    (
+        typename HashTable<empty, Key, Hash>::const_iterator iter = ht.begin();
+        iter != ht.end();
+        ++iter
+    )
+    {
+        if (!found(iter.key()))
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+
+template<class Key, class Hash>
+bool HashSet<Key, Hash>::operator!=(const HashSet<Key, Hash>& ht) const
+{
+    return !(operator==(ht));
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * Friend Operators  * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //