Bridging Object-Oriented and Functional Thinking in Modern C++

How dependencies make C++ systems hard to test and evolve—and why functional thinking changes it Fighting complexity is crucial if you want to succeed in software development. In many real-world C++ projects, however, systems tend to evolve in the opposite direction. Components become tightly coupled, so changes ripple through large parts of the system. State is scattered, reducing transparency about how it evolves over time. Behavior emerges from many interacting parts, making it hard to reason