Analog to "IN" operator for ABAP?

Question

If I have a parameter into a function module (or subroutine, for that matter), that's a string and I need to process based upon certain groups of the possible values is there a way I can check using something like an "IN" operator?
For example:
IF p_code_in EQ 'A100' OR p_code_in EQ 'A200' OR p_code_in EQ 'A300'.
    PERFORM subroutine1.
ELSE...
would become
IF p_code IN ('A100','A200','A300')
ELSE...

Answer 1

Matthew Billingham wrote:>
> >
Jay Sadaram wrote:
> > How about this
> > IF p_code CS ('A100','A200','A300') .
> >
> > CS is contain string
>
> Shouldn't that be:
>
> IF p_code CS 'A100' OR p_code CS 'A200' OR p_code CS 'A300'.
I think this really depends on what the original poster wanted.  I think the point of him wanting to replicate the IN functionality (e.g. SQL query), is for reusability.  I think that what he's looking for is not having to append to the IF statement for every new "AXXX" value.
Example:
Today it is = IF p_code CS 'A100' OR p_code CS 'A200' OR p_code CS 'A300'.
Tomorrow it may be Today it is = IF p_code CS 'A100' OR p_code CS 'A200' OR p_code CS 'A300' OR p_code CS 'A400'.
Then = IF p_code CS 'A100' OR p_code CS 'A200' OR p_code CS 'A300' OR p_code CS 'A400' OR p_code CS 'A500'.
You get the idea.
I think that to truely replicate a "IN" functionality, a function module is needed.  This way, you can simply append the new AXXX value into the input parameter and be done with it.
E.g.
Today it is = call new_function @conditionstring="A100;A200;A300"
Tomorrow = call new_function @conditionstring="A100;A200;A300;A400"
More time pass = call new_function @conditionstring="A100;A200;A300;A400;A500"
A lot more reusable.