Nested tables empty elements

nested_table_empty.sql

DECLARE
  tbl_Args      NUMBER_TABLE := NUMBER_TABLE();
BEGIN
  RAISE_APPLICATION_ERROR(-20100, tbl_ARGS.COUNT); -- 0
END;
/
DECLARE
  tbl_Args      NUMBER_TABLE := NUMBER_TABLE();
BEGIN
  tbl_ARGS.EXTEND(8);
  RAISE_APPLICATION_ERROR(-20100, tbl_ARGS.COUNT); -- 8
END;
/
DECLARE
  tbl_Args      NUMBER_TABLE := NUMBER_TABLE();
  vch_Args      VARCHAR2(1000);
BEGIN
  tbl_ARGS.EXTEND(8);
  
  tbl_ARGS(1) := 1;
  tbl_ARGS(3) := 3;
  
  FOR i IN 1..tbl_ARGS.COUNT
  LOOP
    vch_Args := vch_Args || i || ':' || tbl_Args(i) || '; ';
    
  END LOOP;
  
  RAISE_APPLICATION_ERROR(-20100, vch_Args); -- 1:1; 2:; 3:3; 4:; 5:; 6:; 7:; 8:;
END;
/