7. Enlarge a vector

Rule of use:

The user has the juveca routine to enlarge a simple vector-type object.

It’s an overlay written from user routines JEVEUX. She builds a temporary object and destroys the original after copying.

After expanding an object, it is necessary to request a pointer to this object again (jeveuo).

These various operations can be quite expensive, so it is preferable to minimize the number of calls to Juveca for the same object.

A common strategy is to double the size of an object when we notice that its size is insufficient (rather than expanding it over time).