The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
#include "sarray2.hpp"
#include "sarrayops1.hpp"
#include "sarrayops2.hpp"
int main()
{
SArray<double> x(1000), y(1000);
//...
// process x = 1.2*x + x*y
SArray<double> tmp(x);
tmp *= y;
x *= 1.2;
x += tmp;
}