From: Bo Persson (bop_at_[hidden])
Date: 2007-09-02 16:40:20
David Greene wrote:
:: BTW, the specific issue that keeps coming up involves taking the
:: address
:: of the first element of an empty std::vector:
::
:: &a[0];
::
:: The C++ community promotes std::vector as a C array replacement,
:: but
:: it's really not because it's not legal to do the above operation
:: when
:: the vector is empty.
That's just a misuse of the std::vector. You never, ever get the idea
of taking the address of an empty array. Why attempt that on an empty
vector??
:: I believe this is because the vector
:: interface
:: is characterized in terms of iterators rather than addresses.
Yes, so a.begin() works even for an empty vector. Why is the address
so interesting?
Bo Persson