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IF branches should be small

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Picture yourself as a monkey hanging from a tree branch. You want to jump to another branch but it’s so far away that you cannot see it. If you jump you’ll probably fall to the ground. That’s bad.

We manually implemented 1000 SAP notes

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In the last years of the previous century, an SAP project manager stubbornly opposed to upgrading the SAP system. Instead, he decided that all the SAP notes belonging to that upgrade were to be manually implemented. All 1000 of them.

Podcast Sem especificação

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This Tuesday I was invited by Renan Correa to participate in his podcast “Sem especificação”.

Trotting debugger

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There are many excuses not to use the new functional syntax of ABAP 7.4. One is complaining that it’s impossible to debug.

But it is not.

Escape from hackers

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Data entered by the user is one of the main vulnerabilities of a programme.

Can your users hack your SQL?

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Are you sure your SQL is bulletproof?

Do just one task per LOOP

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When ABAP programmers run into a LOOP they like to use it to get as many things done as possible. Even if that LOOP ends up having hundreds or thousands of lines.

Avoid obsolete ABAP

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ABAP evolves (even though it stood mostly still for too many years). And as it evolves, it leaves behind some commands and syntax constructions which are replaced by better ones.

Besides learning what’s new it is also important to learn what becomes obsolete.

A program is an animal

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When a program is bad because it has duplicate code, it usually becomes shorter once we rewrite it to make it better. But, if its problem is not being properly structured into several classes and methods, if we rewrite it according to the best practices, it will probably end up longer.

Try poligamy

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Most ABAP programmers are like swans. They marry ABAP forever and are eternally faithful.

Keep code blocks short

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Unfortunately that is not what happens in most of the Z code I have seen in my life as an ABAP programmer. Both IFs and LOOPs tend to grow bigger than anyone can deal with. I recently ran into a LOOP with over 1500 lines.

ABAP inside SQL statements

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Did you know that, if you SAP is recent enough, you can use complex ABAP expressions in the middle of SQL commands?

Farewell Wordpress, hello Jamstack

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After over 10 year using Wordpress, the world evolved and Abapinho decided it’s time to evolve with it.

if you love your neighbour, avoid CLEAR

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Please stop. Too many regressions happen because someone forgets to CLEAR or to not CLEAR a variable.

Don't be so negative

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Legibility is very important in all written text. Except, maybe, in concrete poetry.

As a follow up to the previous post, here are a couple of rules to help you deal with the negative in boolean expressions.