oracle initialization varchar collection code example

Example: oracle initialization varchar collection

DECLARE 
   TYPE by_string_t IS TABLE OF INTEGER 
      INDEX BY VARCHAR2(100); 
 
   l_stuff   by_string_t := by_string_t ('Steven' => 55, 'Loey' => 555, 'Juna' => 5555); 
   l_index varchar2(100) := l_stuff.first; 
BEGIN 
   DBMS_OUTPUT.put_line (l_stuff.count); 
    
   WHILE l_index IS NOT NULL 
   LOOP 
      DBMS_OUTPUT.put_line (l_index || ' => ' || l_stuff (l_index)); 
      l_index := l_stuff.NEXT (l_index); 
   END LOOP; 
END;
/

3
Juna => 5555
Loey => 555
Steven => 55