单个向量中不同类别的对象? [英] Objects of different classes in a single vector?

问题描述

在我的代码中，我有一组对象:

class Sphere { ...类平面{ ......

而且我需要在 vector 中使用它们的集合(它们都有不同的类型).我如何将不同类的对象添加到 vector?

解决方案

Sphere 和 Plane 需要一个通用的基类型，或者你的向量需要由 void* 组成.

常见的基本类型(更好):

class Shape { ... };类球体:公共形状{ ... };类平面:公共形状{ ... };std::vector<形状*>形状；

或 void*(不太好):

std::vector形状；

In my code, I have a set of objects:

class Sphere { ...
class Plane { ...
...

And I need to use a collection of them (they will all have different types) in a vector. How would I add objects of different classes to a vector?

解决方案

Sphere and Plane would need a common base type, or your vector would need to be composed of void*'s.

Common base type (better):

class Shape { ... };
class Sphere : public Shape { ... };
class Plane : public Shape { ... };

std::vector<Shape*> shapes;

or void*'s (not great):

std::vector<void*> shapes;

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