It looks and behaves like a normal string, except in the database.

An interesting edge-case in ABAP.

Since ABAP has garbage collection, most of the time just clearing references is enough to dispose of resources. Sometimes, however, a close( ) call is also required.

The main reason to have a static type system in a programming language is that the compiler can catch your mistakes without having to execute the code. In ABAP, even this is not so straightforward.

In addition to “Make Illegal States Unrepresentable,” another concept that I picked from Seemann’s book was “Cyclomatic Complexity.”