如何替换 ABAP 7.5 中的附加行？

Question

I have the following code snippet, that I would like to write in functional style :

 data(lt_es) = me->prepare_process_part_ztoa1( ).
 APPEND LINES OF me->prepare_process_part_protocol( ) to lt_es.

How to rewrite the code above in new ABAP 7.5?

Answer 1

Use the LINES OF construct (available since ABAP 7.40 SP 8 ).

For instance, it could be something like this:

lt_es = VALUE #( BASE me->prepare_process_part_ztoa1( )
                 ( LINES OF me->prepare_process_part_protocol( ) ) ).

Whether it is better/simplier than the original, that's another question :)

Answer 2

It can be also done without BASE . However one must specify the type explicitly (usage of # ends with a syntax error).

REPORT ZZZ.

DATA: lt_t1 TYPE string_table,
      lt_t2 TYPE string_table.

DATA(lt_t3) = VALUE string_table( ( LINES OF lt_t1 ) ( LINES OF lt_t2 ) ).

Would be interesting to know if this is maybe more performant than the usage of BASE if used in a loop for example.