Quotes About OO

SRP is one of the more important concept in OO design. It's also one of the simpler concepts to understand and adhere to. Yet oddly, SRP is often the most abused class design principle.

If its dependencies are inverted, it has an OO design. If its dependencies are not inverted, it has a procedural design.

Procedural code (code using data structures) makes it easy to add new functions without changing the existing data structures. OO code, on the other hand, makes it easy to add new classes without changing existing functions.

The complement is also true: Procedural code makes it hard to add new data structures because all the functions must change. OO code makes it hard to add new functions because all the classes must change.

Computer languages influence how you think about a problem, and how you think about communicating. Every language comes with a list of features: buzzwords such as static versus dynamic typing, early versus late binding, functional versus OO, inheritance models, mixins, macros