Return the i 'th element in the vector. The index i must be between zero and the length of the vector less one. No bounds checking is performed. The second variant can be used as an lvalue. The index i must be between zero and the length of the vector less one.
Bounds checking is performed.
Returns a pointer to the raw data of self. Should be used with care. Returns the length of the vector. If the vector shrinks, it will be truncated. If the vector grows, then the value of the additional elements will be undefined.