template<class T, class Resize = ResizeExpn>
Replace at position pos with all the elements of another vector.
Replace at position pos with all the elements of another vector. The other vector is left unchanged. If there are existing elements at the positions to be replaced, then destructors are called before the space is used. Copy constructors are used to place the elements into this vector. It is allowable for the pos and length of the other vector to specify a replacement that overwrites existing elements and creates new ones. If pos is greater than the length of the vector then undefined behaviour results. If pos is negative, then it is treated as an offset relative to the length of the vector.