C ++抽象基类的集合 [英] C++ collection of abstract base classes

问题描述

如何创建不使用指针就将基类用作集合值来实现抽象基类的STL类集合?

how can I create STL collection of classes which implement abstract base class using the base class as collection value, without using pointers?

Boost中有什么可以让我实现的吗?具体来说就是地图.

is there something in Boost that allows me to implement it? The collection specifically is map.

谢谢

推荐答案

您无法完全避免使用指针.如果要避免对象切片，则必须将指针存储在集合中. Boost具有一个可以很好地隐藏指针的容器: ptr_map

You cannot avoid pointers completely. You must store pointers in the collection if you want to avoid Object slicing. Boost has a container that hides the pointers pretty well: ptr_map

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