StrategyPattern的例子从书中，HeadFirstDesignPatterns,是用C++编写的[here].我正在练习根据EffectiveGoFPatternswithC++11andBoost将其转换为C++11样式如下所示。嘎嘎行为:structQuack{staticvoidquack(){std::cout飞行行为:structFlyWithWings{public:staticvoidfly(){std::coutDuck层次结构:classDuck{public:typedefstd::functionQUACK;typedefstd::functionFL