I recently had to find the last day of the previous month. I found the Method get_last_day_prev_month of class cl_bs_period_toolset_basics doing the job. The actual logic is super simple:
1 2 3 | rv_date = iv_date.rv_date+6(2) = '01'.rv_date = rv_date - 1. |
That’s why I thought about whether I needed a separate method at all, or whether I could do it directly in a one-liner. My first idea was to use the LET operator in combination with CONV (Option 2). This works, but does not look very intuitive, and I noticed it can be done even simpler without using LET (Option 3). And if you already have a typed variable, you can do it even shorter with a single CONV (Option 4).
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 | * Option 1DATA(date_1) = cl_bs_period_toolset_basics=>get_last_day_prev_month( sy-datum ).*Option 2DATA(date_2) = CONV d( LET x = CONV d( sy-datum(6) && '01' ) IN x - 1 ).*Option 3DATA(date_3) = CONV d( CONV d( sy-datum(6) && '01' ) - 1 ).* Option 4DATA date_4 TYPE datum.date_4 = CONV d( sy-datum(6) && '01' ) - 1.cl_demo_output=>write_data( date_1 ).cl_demo_output=>write_data( date_2 ).cl_demo_output=>write_data( date_3 ).cl_demo_output=>write_data( date_4 ).cl_demo_output=>display( ). |
All in all, I have to say that using the get_last_day_prev_month method is still the best solution as it is much more readable.