top of page

SWIFT Programming Language

Swift is a modern, powerful, and intuitive programming language developed by Apple Inc. It was introduced in 2014 as a replacement for Objective-C and has quickly gained popularity among developers for its simplicity, safety, and performance. In this article, we will Swift programming language and explore its key features, benefits, and use cases.

swift programming language

What is Swift Programming Language?

Swift is a programming language that lets you create applications for various Apple devices, such as iPhones, iPads, Macs, Apple Watches, and Apple TVs. Swift was created by Apple in collaboration with the open-source community, which can contribute to its development and improvement. Swift is a different language from Objective-C, which was the previous language used for Apple platforms. Swift uses new ideas and techniques from programming language research and aims to have a syntax that is easy to read and write. Swift code is designed to prevent common errors and bugs, and it also runs very quickly on devices.


The development of Swift started in July 2010 by Chris Lattner, with the eventual collaboration of many other programmers at Apple. Swift took language ideas "from Objective-C, Rust, Haskell, Ruby, Python, C#, CLU, and far too many others to list". On June 2, 2014, the Apple Worldwide Developers Conference (WWDC) application became the first publicly released app written with Swift.

A beta version of the programming language was released to registered Apple developers at the conference, but the company did not promise that the final version of Swift would be source code compatible with the test version. Apple planned to make source code converters available if needed for the full release.

Swift won first place for Most Loved Programming Language in the Stack Overflow Developer Survey 2015 and second place in 2016.


Let's start with the following Hello, World! the program created for OS X playground, which includes import Cocoa as shown below −

/* My first program in Swift 4 */
var myString = "Hello, World!"

If you create the same program for iOS playground, then it will include import UIKit, and the program will look as follows −

import UIKit
var myString = "Hello, World!"

When we run the above program using an appropriate playground, we will get the following result −

Hello, World!

What you can do with Swift Programming Language:

Some of the things you can do with Swift programming language are:

  • Build apps for all Apple platforms, such as iOS, macOS, watchOS, and tvOS.

  • Write code that is safe, fast, and expressive, with features like named parameters, inferred types, protocol extensions, generics, and closures.

  • Take advantage of modern research on programming languages and decades of experience building Apple platforms.

  • Use Swift as a cross-platform and open-source language that can run on Linux and Windows as well.

  • Extend your custom types with powerful language features, such as automatic JSON encoding and decoding, first-class functions, and concurrent code.


1. Rapid Development Process:

Swift's clean and expressive syntax enables faster coding with less code compared to Objective-C. Automatic Reference Counting (ARC) manages memory, saving developers time.

2. Scalability of the Applications:

Swift projects are easily scalable, future-proof, and extendable when new features are required. Apple's support for Swift adds to its investment value.

3. Improved Performance and Safety:

Swift prioritizes speed and outperforms predecessor languages. Strong typing and error-handling functions enhance safety, reducing bugs and facilitating quick error fixing.

4. Easy to Integrate with Objective-C:

Swift seamlessly integrates with Objective-C, allowing the incorporation of new features into existing projects or using Objective-C elements in Swift projects.


1. The language is still young:

Swift, although powerful, is relatively young and undergoing continuous improvements. Some growing pains and issues need to be addressed on its path to maturity.

2. Swift is considered a “Moving Target”:

Swift's lack of backward compatibility with each new release can create instability and sometimes require rewriting projects to stay up to date.

3. Talent Pool is Limited:

The Swift community is growing, but it is still smaller compared to other open-source languages, resulting in a potential talent gap.

4. Lack of support for earlier IOS Versions:

Swift can only be used for iOS 7 or later, limiting its compatibility with older projects running on older iOS versions.


Swift has emerged as a powerful and intuitive programming language, providing developers with a modern and enjoyable coding experience. Its simplicity, safety features, and performance optimizations make it an excellent choice for developing applications on Apple's platforms and beyond. As you continue your journey with Swift, you will discover its vast potential and the countless opportunities it presents in the ever-evolving world of software development.


Recent Posts

See All
bottom of page