/* The following code example is taken from the book * "C++ Templates - The Complete Guide" * by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002 * * (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in all copies. * This software is provided "as is" without express or implied * warranty, and with no claim as to its suitability for any purpose. */// addition of two Arraystemplate <typename T, typename R1, typename R2>Array<T,A_Add<T,R1,R2> >operator+ (Array<T,R1> const& a, Array<T,R2> const& b) {    return Array<T,A_Add<T,R1,R2> >           (A_Add<T,R1,R2>(a.rep(),b.rep()));}// multiplication of two Arraystemplate <typename T, typename R1, typename R2>Array<T, A_Mult<T,R1,R2> >operator* (Array<T,R1> const& a, Array<T,R2> const& b) {    return Array<T,A_Mult<T,R1,R2> >           (A_Mult<T,R1,R2>(a.rep(), b.rep()));}// multiplication of scalar and Arraytemplate <typename T, typename R2>Array<T, A_Mult<T,A_Scalar<T>,R2> >operator* (T const& s, Array<T,R2> const& b) {    return Array<T,A_Mult<T,A_Scalar<T>,R2> >           (A_Mult<T,A_Scalar<T>,R2>(A_Scalar<T>(s), b.rep()));}// multiplication of Array and scalar// addition of scalar and Array// addition of Array and scalar//...