
Cheat sheet: Apple’s Swift programming language (free PDF)
Objective-C has won the hearts of many developers. It started as a programming language that bundled object-oriented programming (OOP) with the likeness of the C programming language. Objective-C called NeXT and Apple home where it was the default programming language for NeXTSTEP, OS X, and iOS. In 2010, Apple started developing Swift, a new programming ...