在单个列表中有多个类类型 [英] Multiple class types in a single list

问题描述

是否可以在单个 std :: list 对象中存储多个不同的类类型？

Is it possible to store multiple different class types in a single std::list object?

我想创建一个多层列表，可以存储 int 和 std :: list 作为一个元素，现在我试图使用 std :: list 。我需要从顶层和后续图层的所有列表中检索数据。

I want to make multi-layered list that can store int and std::list as an element, and now am trying to use std::list for this purpose. I need to retrieve data from all the list from both top-level and subsequent layers too.

这里的问题类似，除了我想使用预定义的类。

This question here is similar except that I want to use pre-defined class.

以下代码在第4行返回错误：

The following returns error at 4th line:

std::list<int> l;
std::list<int> subL;
l.push_back(1);
l.push_back(subL);

这会在第1（和第1行的第3行）返回错误：

This returns error at 1st (and 3th according to the 1st line):

std::list l;
std::list<int> subL;
l.push_back(1);
l.push_back(subL);

推荐答案

您可以声明 list< ; void *> 并存储到指向任何对象的指针。但另一个问题将提高你如何区分他们使用？如果你不需要，可以。

You could declare list <void*> and store to it pointers to any of your objects. But another question will raise how you're going distinguish them to use? If you don't need to, it's OK.

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