     makeUnique()</b><br><br>
If the vector's elements are referenced (or aliased) by another vector,
a copy is made, and on return the vector refers to the new copy.
</li>

<br><br><li>
<b>void            reference(T_vector& x)</b><br><br>
Makes the vector an alias for vector x.  After this member function is
used, both the vector and x refer to the same underlying data.</li>

<br><br><li>
<b>void            resize(size_t length)</b><br><br>
If length is different than the current length of the vector, the