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/* 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.
*/
#ifndef SUMPOLICY_HPP
#define SUMPOLICY_HPP
template<bool use_compound_op = true>
class SumPolicy {
public:
template<typename T1, typename T2>
static void accumulate (T1& total, T2 const & value) {
total += value;
}
};
template<>
class SumPolicy<false> {
public:
template<typename T1, typename T2>
static void accumulate (T1& total, T2 const & value) {
total = total + value;
}
};
#endif // SUMPOLICY_HPP
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