update_unique_ids: Create the unique_ids for the new nodes
Description
This function is called by `append_core_attr` and append new
unique_ids to the created nodes. It also keeps track of the already used
unique_ids with the /codedat[["_last_unique_id"]] variable
Usage
update_unique_ids(dat, n.new)
Arguments
dat
a Master list object of network models
n.new
the number of new nodes to give unique_id
to
Value
the Master list object of network models (dat
)