std :: list固定大小 [英] std::list fixed size

问题描述

如何创建具有固定元素计数的std::list?

How can I create std::list with a fixed element count?

推荐答案

#include <list>

// list with 5 elements, using default constructor
const size_t fixedListSize(5);
std::list<int> mylist(fixedListSize);  

如果您希望它始终只包含5个元素，则必须将其包装在Facade类中，以防止插入和删除.

If you want it to always have exactly 5 elements you'd have to wrap it in a facade class to prevent insertion and erasure.

如果这确实是您想要的，那么最好使用其他容器代替list，因为如其他答复中所述，您将隐藏list的最有利功能.

If that is indeed what you want, you'd be better off using a different container instead of list, since as noted in other responses you would be hiding the most advantageous features of list.

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