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applications/test/Field/Make/files

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+Test-Field.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-Field

applications/test/Field/Make/options

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+/* EXE_INC = -I$(LIB_SRC)/cfdTools/include */
+/* EXE_LIBS = -lfiniteVolume */

applications/test/Field/Test-Field.C

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+#include "Test-Field.H"
+
+int main()
+{
+    Vector<double> v1(1, 2);
+    Vector<double> v2(2, 3);
+
+    std::cout << v1 + v2;
+
+    return 0;
+}

applications/test/Field/Test-Field.H

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+#include <iostream>
+
+template<class C>
+class Vector;
+
+template<class C>
+Vector<C> operator+(const Vector<C>& v1, const Vector<C>& v2);
+
+template<class C>
+std::ostream& operator<<(std::ostream& os, const Vector<C>& v);
+
+
+/*---------------------------------------------------------------------------*\
+                           Class Vector Declaration
+\*---------------------------------------------------------------------------*/
+
+template<class C>
+class Vector
+{
+
+    double X, Y;
+
+public:
+
+    inline Vector(const double x, const double y);
+
+    C x() const
+    {
+        return X;
+    }
+
+    C y() const
+    {
+        return Y;
+    }
+
+    friend Vector<C> operator+ <C>(const Vector<C>& v1, const Vector<C>& v2);
+
+    friend std::ostream& operator<<(std::ostream& os, const Vector<C>& v)
+    {
+        os  << v.X << '\t' << v.Y << '\n';
+        return os;
+    }
+};
+
+template<class C>
+inline Vector<C>::Vector(const double x, const double y)
+{
+    X = x;
+    Y = y;
+}
+
+
+template<class C>
+inline Vector<C> operator+(const Vector<C>& v1, const Vector<C>& v2)
+{
+    return Vector<C>(v1.X+v2.X, v1.Y+v2.Y);
+}