We’re only a couple of months away from the new year, which means it’s time to start looking ahead to the tech trends that will dominate the software industry in 2022. As the new year approaches, we want to help you get familiar with upcoming trends so you can be prepared and start taking your skills to the next level. Today, we’ll discuss Swift.
The Swift programming language is a general-purpose, open-source programming language designed by Apple. The language is influenced by Python, making it fast and intuitive. Swift is mainly used for native iOS and macOS development. Many popular apps including LinkedIn, Lyft, and WordPress are written in Swift. If you’re interested in iOS development, Swift is a great language to learn. Let’s learn more about this popular language!
Swift is a multi-paradigm, general-purpose, open-source programming language for iPadOS, macOS, tvOS, watchOS, and iOS development. It was created by Apple in 2014 to give developers a powerful language to develop iOS apps. According to swift.org, the language was designed to be safe, fast, and expressive. It’s intended to be a replacement for C-based languages. The Swift language is constantly evolving, and the community continues to grow. Swift source code can be found on GitHub, making it easy for anyone to access the code.
Swift was designed to be easy to learn and easy to use. Apple created the language with new coders in mind. Whether you’re still in school, exploring a new career path, or wanting to learn how to code, Swift was created to be a simple and intuitive first language to learn. If you’re new to coding, Swift Playgrounds is an iPad app that makes it easy to get started with Swift coding.
Once you learn Swift, you’ll be an appealing candidate for potential employers. Swift developers are in high demand. According to Apple, the company has created around two million jobs in the United States. According to Indeed, the average salary for an iOS developer in the U.S. is $116,804. If you want to get into app development, Swift is a smart language to learn.
Let’s take a look at some of the pros and cons of the Swift programming language.
nil, and the Swift compiler will stop you if you try to use a
nilobject. These features help prevent runtime crashes.
Objective-C is a general-purpose, object-oriented programming language. It was the primary programming language used for OS X and iOS development before Swift came along in 2014. It combines features of C and Smalltalk. After the creation of Swift, Objective-C began to decline in use and popularity, although existing apps written in Objective-C will still need to be maintained.
So, what makes Swift the better choice?
First, it’s important to note that Swift is not the direct successor to Objective-C. Both languages have different capabilities and can be used together for mobile app development. Let’s look at a side-by-side comparison of the two languages.
Overall, Swift is a more desirable language to choose because it’s safer, faster, more intuitive, and interactive. Swift has Objective-C interoperability, which means that Swift code can live alongside existing Objective-C files. With Swift, you’ll also have complete access to Objective-C APIs.
Our 1-week Educative Unlimited Trial allows you to get hands-on with Swift programming for free. Once you’re done, browse through hundreds of other curated courses to continue taking your programming skills to the next level.
Swift is known for its simple and intuitive syntax. Let’s take a look at some of the Swift syntax basics:
In Swift, a
Hello World! program is simple. It can be done in one line, and you don’t need to import any libraries or additional functionalities. Swift also doesn’t require semicolons at the end of statements.
In Swift, you use
var to make a variable and
let to make a constant. Variables and constants need to have the same type as the value you want to assign to them.
var myVariable = 10 let myConstant = 10
You don’t have to explicitly write the type. If you provide a value when creating a variable or a constant, the compiler can infer what type it is. For example, the compiler will infer that
ourVariable is an integer because its value is set to an integer.
ourVariable = 25
If you want to convert a value to a different type, make an explicit instance of the desired type.
let age = 3 let myCatIs = "My cat is " + String(age) print(myCatIs)
There’s an easier way to include an integer in a string. You put the value in parentheses, and then put a backslash before the parentheses.
let cats = 5 let dogs = 10 let catsAmount = "I have \(cats) cats." let dogsAmount = "I have \(dogs) dogs." let petsAmount = "I have \(cats + dogs) pets." print(petsAmount)
You can create arrays and dictionaries using brackets. You access elements by putting the index or key in the brackets. Your array will grow automatically as you add new elements.
var groceryList = ["eggs", "yogurt", "cheese"] groceryList = "bread" groceryList.append("coffee") print(groceryList)
Congrats on taking your first step with Swift! Swift is a general-purpose, open-source programming language mainly used for native iOS and macOS development. Many of the apps on the app store are written in Swift. Swift is growing in popularity, so it’s a good time to learn the language. We covered some of the basics today, but there’s still so much more to learn about Swift programming, such as:
To get started learning these concepts and more, check out Educative’s course Swift Programming for Mobile App Development. In this hands-on course, you’ll cover topics ranging from arrays, dictionaries, integers, object-oriented programming, error handling, and more. By the end, you’ll have the foundational knowledge you need to begin diving deeper into Apple-based app development.
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