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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.
template<typename T1, typename T2>
class Promotion<Array<T1>, Array<T2> > {
typedef Array<typename Promotion<T1,T2>::ResultT> ResultT;
template<typename T>
class Promotion<Array<T>, Array<T> > {
typedef Array<typename Promotion<T,T>::ResultT> ResultT;