在 std::vector<bool> 上调用 data() 会发生什么?
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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