c++ - How can I get a pointer to the first element in an std::vector?

Question

I want to write data from an std::vector<char> to a socket, using the write function, which has this prototype:

ssize_t write(int, const void *, size_t);

The second argument to this function must be a pointer to the first element in the std::vector<char>. How can I get a pointer to this element?

I tried std::vector::front but this returns a reference, while I need a pointer.

Answer 1

C++11 has vec.data() which has the benefit that the call is valid even if the vector is empty.