Creates a new #GdaSet object, and populates it with the list given as argument. The list can then be freed as it is copied. All the value holders in holders are referenced counted and modified, so they should not be used anymore afterwards.
a list of #GdaHolder objects
a new #GdaSet object
Creates a new #GdaSet object, and populates it with the list given as argument. The list can then be freed as it is copied. All the value holders in holders are referenced counted and modified, so they should not be used anymore afterwards.