Articles on 4D migration

Articles

What we run into while migrating and maintaining 4D applications. Written for the people in the middle of it.

The compiler shows you the removed commands. What you notice weeks later are the things that raise no error but produce a wrong figure.

The code is predictable work. The templates are not — and they are systematically underestimated in quotations.

Version control that works, differences you can read, and more than one person able to touch the code.

The most expensive mistake is starting a rebuild without knowing what is in the old application.