?? compose3.hpp
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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 FO1, typename FO2>class Composer : private FO1, private FO2 { public: // constructor: initialize function objects Composer(FO1 f1, FO2 f2) : FO1(f1), FO2(f2) { } // ``function call'': nested call of function objects double operator() (double v) { return FO2::operator()(FO1::operator()(v)); }};
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