A vector made of copies of elements contained in vec1..n.
vector_concat takes a variable number of vectors (heterogeneous arrays) and constructs a new vector containing copies of each (top level) element in the arguments.
dbg_obj_print (vector_concat (vector (now(), 'black', 'crow'), vector ('said', 'nevermore'))); dbg_obj_print (vector_concat (vector ('a','b'), vector (vector ('c', 'd'), 'e')));
Would output something like this on the Virtuoso console:
({ts 2001-08-07 16:57:12.000000} "black" "crow" "said" "nevermore" ) ("a" "b" ("c" "d" ) "e" )