Swift is a modern language and, coming from a purely object-oriented language background, can feel overwhelming. With its strong functional capabilities as well as extensive generics support, Swift is an expressive language that generalizes an interesting programming paradigm: protocol-oriented programming.
Protocol-oriented programming doesn't replace object-oriented programming or functional programming—it's another tool that helps you elevate your code bases to new heights. It doesn't magically transform poorly written code into unicorns and rainbows.
Alongside powerful protocols come generics-oriented programming. Generics let you write functions with protocols instead of concrete types. When programming with concrete types, only children of this type, through inheritance, can be used in place of the parent type. With protocols...
