Is there a standard way of gaining access to the underlying bits of a vector<bool>?  I would like to serialize the information to a file and am trying to avoid a) serializing it as formatted text, which completely negates any space savings associated with a packed vector, and b) creating my own buffers, reading the data from the vector and setting the corresponding buffer bit one bit at a time.  The whole point of vector<bool> is that it's implemented as a packed bitfield, but if you can't serialize it in
a standard and efficient way, it's usefulness is somewhat limited.
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