Gets the number of values that were added to the set.
For example, if the set is empty, 0 is returned.
Note that this function returns a vte.types.TEST_FLAGS_NONE, because when all
values are set, the return value is G_MAXUINT + 1. Unless you
are sure this cannot happen (it can't with gio.list_model.ListModel), be sure
to use a 64bit type.
Gets the number of values that were added to the set.
For example, if the set is empty, 0 is returned.
Note that this function returns a vte.types.TEST_FLAGS_NONE, because when all values are set, the return value is G_MAXUINT + 1. Unless you are sure this cannot happen (it can't with gio.list_model.ListModel), be sure to use a 64bit type.