Abapinho hasn’t been talking a lot about 7.40 because most of the new possibilities have already been widely discussed in other sites and we don’t want to reinvent the wheel.
But, here and there, I find small useful jewels which seem to still be under the radar. This is one of them.
In SQL you can get a list of unique values of a field using DISTINCT. When the data is already in an internal table, before ABAP 7.40 you had to use a LOOP and a COLLECT.
But now that we live in more modern times, there is a simpler and more elegant way to achieve the same with a single command.
Someone decided to run an editable ALV (based on CL_GUI_ALV_GRID) in background. It dumped. The solution is simple but not that obvious.
Nowadays I rarely use CL_GUI_ALV_GRID because SALV is so much better. But when I am asked to make an editable ALV I still use it. Until very recently, I thought that, in order to use it, I needed a screen with a container. And because I’m using ABAP OO, I’d need a function group to host it and a function module to call it. Painful.
Sometimes the simplest things take the longest time to do. For instance, we recently needed an ALV grid to automatically resize to fill the whole window. But how? But how? But how?
When I was a little boy, back in the 80’s, I had to type LOAD "" and then wait for several minutes staring at stripes in a TV and listening to strange noises before a ZX Spectrum game was ready to be played. Many years later, when I already had a PC, I found an emulator which had a menu with hundreds of ZX Spectrum games. I just had to pick one from the list and start playing immediately.
I have always used * to comment my code. I only used " for pseudo-comments or to leave small comment at the end of a line.
But I recently learned that using " makes much more sense.
ABAP’s versioning system is terribly bad. Besides all its faults, it doesn’t provide an easy way to determine who did what and when. Git, which is a decent versioning tool, let’s you do this through its git-blame command.
Due to this, many ABAP programmers got used to sign the code with their name and date every time they add, delete or modify lines in a program. And the more that program is modified, the more difficult it becomes to read it and understand what’s there.
Some years agor I showed how to convert a normal MESSAGE into a typified exception. Meanwhile ABAP evolved a lot and now, since version 7.40, that complex solution is no longer needed.
