Beyond Legacy Code

Retrospective

Implement the Design Last and program by intention to reduce complexity and support changeability.

In this chapter, we discovered…

• You really can’t assure quality; you can only create it. So, instead of focusing on verifying quality, focus on building it in.

• Code that is readable and understandable is inherently flexible, which makes it easy (and therefore cost effective) to modify.

• Programming by intention results in a cohesion of perspective: all code is at the same level of abstraction so it’s easier to read and understand.

• Improve testability and break dependencies by separating the creation of objects from their usage.

• Emergent design is not for beginners, and it requires strict attention to quality and testability.

Paying ...