问题
What is the difference between bit-vector and bitset container of stl ? Please explain. To my understanding bitset is the implementation of the concept of bitvector am I right or wrong? What are the other ways to implement bit vector?
回答1:
bit_vector has the same interface as an std::vector, and is optimised for space. It not a part of standard C++. This documentation claims it is close to an STL vector<bool>, which presumably is quite close to a standard C++ std::vector<bool>.
std::bitset is fixed size, and has a different interface.
回答2:
They're different. A std::bitset has a fixed size known at compile time. This allows it to be implemented very efficiently. A bit vector (I assume you mean std::vector<bool>) can vary in size like any other std::vector.
来源：https://stackoverflow.com/questions/13321446/bit-vector-and-bitset