The following code example is taken from the book
C++ Templates - The Complete Guide
by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
© Copyright David Vandevoorde and Nicolai M. Josuttis 2002
#ifndef ACCUM_HPP
#define ACCUM_HPP
#include "accumtraits2.hpp"
template <typename T>
inline
typename AccumulationTraits<T>::AccT accum (T const* beg,
T const* end)
{
// return type is traits of the element type
typedef typename AccumulationTraits<T>::AccT AccT;
AccT total = AccT(); // assume AccT() actually creates a zero value
while (beg != end) {
total += *beg;
++beg;
}
return total;
}
#endif // ACCUM_HPP