Programming Fundamentals/Introduction Examples Swift

Overview

Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, and Linux. Apple intended Swift to support many core concepts associated with Objective-C, but in a “safer” way, making it easier to catch software bugs. Swift was introduced in 2014.

Swift is a popular programming language for the Apple platforms it supports, but it lacks support for Microsoft Windows environments.TIOBE: Index.

Example

Hello World

 // This program displays "Hello world!"
 //
 // References:
 // https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/GuidedTour.html
 
 print("Hello world!")

Output

Hello world!

Discussion

Each code element represents:Programming Fundamentals/Hello World

• // begins a comment
• print() calls the print function
• "Hello world!" is the literal string to be displayed

Swift IDEs

There are several free cloud-based and local IDEs available to begin coding in Swift. Check with your instructor or do your own research for recommendations.

Cloud-Based IDEs

• GDB Online
• IBM Swift Sandbox
• Ideone
• iSwift
• paiza.IO
• repl.it

Local IDEs

• Wikipedia: AppCode
• Wikipedia: Atom (text editor)
• Wikipedia: Xcode

References

• Wikiversity: Computer Programming

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