del_hash_string

associative arrays (the same as hashes in Perl)
to create a hash, use @hlpIdccreate_array[create_array]() function
you can use the following function with hashes:
     @hlpIdcget_array_id[get_array_id](), @hlpIdcrename_array[rename_array](), @hlpIdcdelete_array[delete_array]()
The following additional functions are defined:

success set_hash_long(long id, string idx, long value);
success set_hash_string(long id, string idx, string value);
long    get_hash_long(long id, string idx);
string  get_hash_string(long id, string idx);
success del_hash_string(long id, string idx);
string  get_first_hash_key(long id);
string  get_next_hash_key(long id, string idx);
string  get_last_hash_key(long id);
string  get_prev_hash_key(long id, string idx);