Swift Introduction

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Swift is an interactive and powerful programming language developed by Apple Inc., for iOS, macOS, watchOS, and tvOS. The latest version of Swift is Swift 4. It is much similar to the concept of C and Objective-C languages. The creator of the Swift made sure not to include the constraints involved in the C compatibility. It makes use of the same runtime as used in Objective-C (for iOS and macOS platforms). This is the reason why the programs written in Swift 4 is compatible with the older versions of iOS, which are iOS 6 and OS X 10.8 platforms.

In this Swift tutorial, you will get to know about basics of Swift 4 programming language. We will be starting from the definition of the Swift language and then proceed to the coding part. We are hoping that you are already aware of the programming languages. After the completion of this tutorial, you will be ready to take your basic Swift skills to another level of expertise.

Pre-requisites: Before starting this tutorial, you need to be aware of the concepts and terminologies of the basic computer programming languages. Also, you must be aware of one of the basic programming languages.

Key Features of Swift

Swift is an intuitive programming language developed for iOS and MacOS. The new version of Swift (which is Swift 4) is having an interesting playground feature. With this feature, programmers and developers can write and execute their programming code instantly. The language was first introduced in the year 2010. Chris Lattner is the name which took 14 years of his life to come up with this interesting programming language. This language is an outcome of various languages including C, Objective-C, C#, CLU, Haskell, Ruby, and Rust. The recent version of this programming language i.e., Swift 4 has been included in the Xcode 6 Beta.

Now, take a look at the major features of Swift 4.

  • It uses safe and secure programming patterns.
  • It offers numerous modern programming features like playground feature.
  • It makes use of understandable and easy syntax as provided in Objective-C.
  • It is easy to write and execute the codes for iOS and OS X apps.
  • With this programming language, you will be subjected to extensive access to already existing Cocoa frameworks.
  • It is a combination of the portions of both the object-oriented and procedural paradigms.
  • It does not need an independent standard library to import functions such as I/O operations.