Sublime

As development proceeded, the developers changed partners once or twice a day. Each developer got to see what all the others were doing, and so knowledge of the code spread generally throughout the team.

Quantity Goal Quality Goal Result Three new features Fewer than five bugs per feature in quality assurance testing Developers will write cleaner code.

The Gang of Four stated two principles of good object-oriented design that were present in all the patterns: “favor object composition over class inheritance” and “program to an interface, not an implementation.”8

OSTs Help Product Trios Adopt a Continuous Mindset

At a more technical level, the drive for better testability and deployability (particularly testability) encourages engineers to design systems that separate essential and accidental complexity more effectively. This in turn keeps your options more open for changes, even quite radical changes, in other architectural properties of the system. This a

The role of testing becomes to prove that deliverables support desired actor behaviours, instead of comparing software features to technical expectations. If a deliverable does not support an impact, even if it works correctly from a technical perspective, it is a failure and should be treated as a problem, enhanced or removed.