A general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language.
This is the main programming language used by Apple for the OS X and iOS operating systems and their respective APIs, Cocoa and Cocoa Touch. This reference will take you through simple and practical approach while learning Objective-C Programming language.
Objective-C fully supports object-oriented programming, including the four pillars of object-oriented development:
- Data hiding
It includes a list of extended datatypes like NSArray, NSDictionary, NSSet and so on.
It provides features for URL handling, utilities like date formatting, data handling, error handling, and so on.
Use of Objective-C
Objective-C is used in iOS and Mac OS X. It has large base of iOS users and largely increasing Mac OS X users.
Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns.
The goal of the Swift project is to create the best available language for uses ranging from systems programming, to mobile and desktop apps, scaling up to cloud services. Most importantly, Swift is designed to make writing and maintaining correct programs easier for the developer.
The most obvious way to write code should also behave in a safe manner. Undefined behavior is the enemy of safety, and developer mistakes should be caught before software is in production. Opting for safety sometimes means Swift will feel strict, but we believe that clarity saves time in the long run.
Swift is intended as a replacement for C-based languages (C, C++, and Objective-C). As such, Swift must be comparable to those languages in performance for most tasks. Performance must also be predictable and consistent, not just fast in short bursts that require clean-up later. There are lots of languages with novel features — being fast is rare.
Swift benefits from decades of advancement in computer science to offer syntax that is a joy to use, with modern features developers expect. But Swift is never done. We will monitor language advancements and embrace what works, continually evolving to make Swift even better.