om/project/array-utils/blob/e71aaf14be270d4aa1e5ba6fa9319e2de776dda0/utils.lisp#L124">Source</a>  </header> <div class="docstring"><pre>Pushes the element onto the front of the vector and extends if necessary.
This operation is very costly and takes O(n) time as each element needs to
be shifted as per ARRAY-SHIFT.

See <a href="#FUNCTION%20ARRAY-UTILS%3AVECTOR-PUSH-EXTEND-POSITION" class="xref">VECTOR-PUSH-EXTEND-POSITION</a></pre></div> </article> </li>  <li> <article class="definition function callable" i