在 std::vector<bool> 上调用 data() 会发生什么?

问题描述

C++11 在 std::vector 上实现了 data() 成员函数，它给你一个指向内存数组的指针.这是否意味着模板特化 std::vector 也有这个成员?由于这种专业化不以 bool * 的形式存储数据，您可以期望调用 data() 什么样的行为?

C++11 has implemented data() member function on std::vector, which gives you a pointer to the memory array. Does this mean the template specialization std::vector<bool> have this member as well? Since this specialization doesn't store the data in terms of bool *, what kind of behavior can you expect from calling data() ?

推荐答案

这个页面记录了class 明确表示专业化不提供此方法.

This page documenting the class explicitely indicates that the specialization does not provide this method.

特化具有与非特化向量相同的成员函数，除了数据、emplace 和 emplace_back 不存在于本特化中.

The specialization has the same member functions as the unspecialized vector, except data, emplace, and emplace_back, that are not present in this specialization.

此其他页面以及C++ 规范 确认一下.

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