Swift Tutorial

Swift is a new programming language developed by Apple Inc. for iOS and OS X development. It adopts the best of C and Objective-C, without the constraints of C compatibility. It uses the same runtime as the existing Obj-C system on Mac OS and iOS, which enables Swift programs to run on many existing iOS and OS X platforms.

This Swift tutorial will help you to understand Swift in a very easy and simple way. So that you can create your own Swift application or program. It will cover all the major concepts of Swift programming language which will boost your confidence and make you a good Swift programmer.

What is Swift Programming Language?

Swift is a modern and open-source programming language that is specifically designed by Apple for its platforms. It was introduced in 2014 with the aim of providing a language that is not only powerful and versatile but also provides great safety, performance, interoperability with Objective-C and modern syntax. So using Swift developers can easily develop robust and high-performance applications.

The latest version of Swift is Swift 5.9.2

We can also use swift to develop software for phones, desktops, and servers. Swift is a great combination of modern thinking and diverse contributions from its open-source community. The Swift compiler is optimized for its performance and the language itself is tailored for its development.

Why to Learn Swift?

If you are interested in developing an application for Apple’s ecosystem, then Swift is for you. Swift opens a gateway for you to create dynamic, innovative, and powerful applications for iOS, macOS, watchOS, and tvOS. Apple prefers Swift programming language as a primary language because it has modern syntax, high performance, provides great safety, and works seamlessly with all devices.

We can also use Swift to create applications for Windows and Android due to its open-source nature and cross-platform compatibility. Cross-platform app development allows developers to write code and then deploy it on multiple platforms, for example, Flutter, React Native, and Xamarin. However Swift offers this versatility, the user experience may not be as seamless as that can achieved by using other programming languages such as C#, .Net, Java, Kotlin etc.

Swift Jobs and Opportunities

In the dynamic era of technology, Swift programming language emerged as a milestone for creating user-friendly applications for Apple’s products. The demand for Swift”s expertise is reaching to new heights and the market is loaded with lots of opportunities for talented developers. Whether you are a seasoned Swift developer or a newcomer you will have lots of opportunities with good packages. The average salary of a Swift developer is 5L to 12L per year, it can vary depending on the location, position and experience.

There are so many companies that provide a good package and working culture for Swift developers. It”s impossible to list down all the company names that use Swift, but some

• Apple
• Google
• Facebook
• Microsoft
• Amazon
• Twitter
• Airbnb
• Snapchat
• Adobe
• Pinterest
• Slack
• Uber
• Netflix

Swift Online Compiler

We have provided Swift Online Compiler/Interpreter which helps you to Edit and Execute the code directly from your browser.

Example

// First Swift program
print("Hello! Swift")

Output

Hello! Swift

Careers with Swift

Swift is a powerful and intuitive language for software development. It provides a robust platform for creating dynamic and effective applications for Apple’s ecosystem. It is commonly used to create seamless and innovative applications for iOS, macOS, watchOS and tvOS. Swift opens the doors for huge opportunities where the developer can show off his/her skills. Following are some potential career options with Swift programming language −

• iOS/macOS App Developer

• Mobile App Developer

• Game developer

• Augmented Reality(AR) developer

• UI/UX designer for iOS app

• Quality Assurance(QA) engineer for iOS App

• iOS Framework Developer

• Swift Trainer

• Swift Technical Writer

• Cross-Platform Mobile Developer

• Full Stack Swift Developer

• WatchOS App Developer

Who Should Learn Swift

This tutorial is designed for software programmers who would like to learn the basics of Swift programming language from scratch. This tutorial will give you enough understanding of Swift programming language that you can take yourself to higher levels of expertise.

Prerequisites to Learn Swift

Before proceeding with this tutorial, you should have a basic understanding of Computer Programming terminologies and exposure to any programming language.

Frequently Asked Questions about Swift

There are some very Frequently Asked Questions(FAQ) about Swift, this section tries to answer them briefly.

What is the latest version of Swift?

The latest version of Swift is Swift 5.9. It was released in September 2023 with new features like a macros system, generic parameters packs, ownership packs, and if and switch as expressions.

How do you say hello in Swift?

In Swift programming, we can say hello using the print() function. Simply write print(“Hello world”) and run this code in the compiler it will print “Hello world” on the screen without creating any extra variable.

What Is Swift Used For?

Swift is a powerful and general programming language that is used to develop applications for iPhones, iPads, MacOS desktops, Apple Watches and TVs. It can also run on Linux and Windows operating systems.

What are the primary data types in Swift?

There are six primary data types of Swift: String, Character, Integer, Float, Double, and Boolean.

How many data types are there in Swift?

There are six primary data types (String, Character, Int, Float, Double, and Bool), and four compound types (Array, Set, Dictionary, Tuples).

How to declare variables in Swift?

In Swift, we can declare a variable using the var keyword followed by a variable name with or without data type.

Example: var number: Int = 19 or var number = 12.

How to define a Constant in Swift?

In Swift, we can define a constant using the let keyword followed by the constant name with or without data type.

Example: let number: Int = 19 or let number = 12.

What is double in Swift?

Double is a data type to store floating point numbers. It has a precision of at least 15 decimal digits. It is also known as a 64-bit floating point number. Due to its high precision Double is preferred by Swift as compared to Float.