Swift is an extremely powerful programming language created by Apple for macOS, iOS, watchOS televisionOS, Linux. It was initially designed to run iOS as well as OS X apps but now it's an open source language. Swift is designed to be an alternative to C, C++ and Objective-C as it is like in performance to these languages. Swift is a substitute for objective-C, which makes use of all the latest programming concepts and offers a simple syntax that is familiar to users as opposed to the more difficult Objective-C. It is a familiar language for those who use objective-C.

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Features of Swift

Security and bug-catching

One of the primary goals Apple had in the design of the language was creating an "safer" code. It comes with tools and features to fix common programming errors.

In contrast to Objective-C that exposes accessors or pointers that could cause vulnerability in the software or even bugs later on.

Ease of use

Although it is based on Objective-C Swift was developed to be more user-friendly. It utilizes the latest programming language theory, and a simpler syntax, making it easy to write and read.

It also has less code needed to accomplish the same job in the same way as Objective-C and is frequently acknowledged for its ease of use by beginners.

Speed

Thus the name. Swift is made to be light and speedy. It can process data more quickly than Objective-C. In Objective-C classes, objects are considered objects, which result in slow code. It converts arrays into structures and allows the code to run faster than its Objective-C counterpart.

Similar to this Apple's language uses smaller amounts of memory than Objective C. Objective-C needs RAM if the it has an object-link. Swift however, on the other however, uses structures. This has decreased the amount of reference-type information and SDK class, and has resulted in greater efficiency in memory use.

Open Source

In creating Swift open source, the entire community of developers can participate in the development of the language and assist in bringing it to a wider range of platform," said Craig Federighi Apple's senior vice president for Software Engineering, in a press announcement. "Swift's capability and simplicity will motivate an entire new generation of developers to take up programming and today's announcement that they'll have the ability to share their ideas wherever from smartphones and the internet.