As we have read through this chapter and looked at some of the advantages that protocol-oriented design has over object-oriented design, we may think that protocol-oriented design is clearly superior to object-oriented design. However, this assumption would not be entirely correct.
Object-oriented design has been around since the 1970s and is a tried and true programming paradigm. Protocol-oriented design is the new kid on the block and was designed to correct some of the issues with object-oriented design.
Object-oriented and protocol-oriented design have similar philosophies, such as creating custom types that model real-world objects, and polymorphism to use a single interface to interact with multiple types. The difference is how these philosophies are implemented.
To me, the code base in a project that uses protocol-oriented design is much safer, easier to read,...
