Top 15 Swift 5 Features to Use During iOS App Development

Swift is perfect for use in server apps that need runtime safety, compiled performance, and a small memory footprint. To steer the direction of Swift for developing and deploying server applications, the community formed the Swift Server work group. The first product of this effort was SwiftNIO, a cross-platform asynchronous event-driven network application framework for high performance protocol servers and clients. It serves as the foundation for building additional server-oriented tools and technologies, including logging, metrics, and database drivers, which are all in active development. The Swift 5.3 release of September 2020 brought the long-awaited extension of official platform support, including Windows and additional Linux distributions.

It builds on the best parts of C and objective C, without being constrained by its compatibility. It adopts safe patterns for programming and puts in more features in order to make the programming more flexible and easier. The foundations for Swift were laid by advancing their existing debugger, compiler and framework infrastructure. They simplified the memory management part using ARC — Automatic Reference Counting. The framework stack, built upon a solid base of Cocoa and Foundation, has been completely standardized and modernized.

Beyond the Code: Exploring the Innovations of Swift 6

You can return more than one value from functions using a tuple. In other languages like the C language, you can return multiple values using pointers or structures but in Swift, you can return multiple values as a single entity. Remember that tuples are a fixed set of elements arranged in an ordered sequence. In Swift, generics allow you to write flexible and reusable code that can work with any type. Using generics, we can write functions and types that are reusable and can work with any type.

swift vs objective c performance

Swift is extensively used to develop applications that run on iOS, OS X, tvOS, and watchOS. Objects are useful when the data is large, like the description of a window or the contents of a document. In these cases, access to that data is provided by copying a 32- or 64-bit value, versus copying an entire data structure. However, smaller values like integers are the same size as pointers (typically both are one word), so there is no advantage to passing a pointer, versus passing the value.

Open source

Both languages have different capabilities and can be used together for mobile app development. Aspiring app developers can access free courses to learn to build their first apps in Xcode. And Apple Stores around the world host Today at Apple Coding & Apps sessions where you can get practical experience with Swift code. Swift is built as a replacement for C-based language thus the performance is the same in many tasks. It automatically corrects the errors and tests the code thus it performs faster.

When we create a variable and assign any kind of value to that variable. Here, Swift will ensure type safety while writing code on a daily basis. The async-let syntax allows multiple functions to run in parallel. Await is again used to mark the point at which the program will suspend to wait for the completion of the async functions called earlier. When the Foundation framework is imported Swift invisibly bridges the String type to NSString, the String class commonly used in Objective-C. The book starts with a twenty-page introduction that sets up the basics of the language, which is often enough for experienced programmers coming from another code like Ruby or C++.

As Swift changes, it brings better Swift latest version features. Swift 5 comes with lightweight syntax and combines powerful type inference and pattern matching. The new version not only allows Swift developers to express complex ideas in a clear and concise manner but also improves the readability of the code during the iOS app development. Objective-C is a general-purpose, object-oriented programming language.

Reasons Why You Must Learn Android Development

Apple encourages those interested in learning about or contributing to Swift to visit the website. It is Apple’s jumping-off point for those interested in learning about Swift, as well as a community hub where users can ask questions and contribute to the active development of the language. According to Apple, a common search algorithm completes 2.6 times faster than Objective-C, and up to 8.4 times faster than Python 2.7.

  • Those who want to code entire apps within Playgrounds and ship them to customers can do so starting in iPadOS 15 — all without touching Xcode on a Mac.
  • One of Apple’s priorities when designing the language was to create a «safer» code.
  • The most noteworthy Swift feature is its similarity to Objective-C.
  • Swift is a powerful and intuitive programming language for iOS, iPadOS, macOS, tvOS, and watchOS.

Swift code is safe by design, yet also produces software that runs lightning-fast. Swift makes the code easy to read and write, much faster, cleaner and safer program. It also borrows some features from other languages written in clean syntax that makes code easy to maintain and read. Swift has a powerful Standard library of its own, which covers all the needed functionality for writing Swift apps. That means the code will be portable to all platforms that Swift supports.

Make data-driven decisions to drive reader engagement, subscriptions, and campaigns. Apple wants no part of Google’s addition of end to-end encryption to RCS, and the iPhone maker will instead work with the standards body to mandate a universal version instead. The rest of the book shows how one would actively develop an app, starting simple with a print «Hello World» script, and building on more complex themes as it introduces new points.

what are the features of swift programming

You can also distribute your source code to the Swift community. At first, version 2.2 which was propriety language was made open-source software for Apple’s platforms and Linux on December 3, 2015, under the Apache License 2.0. Apple gadgets are one of the most trusted and popular gadgets in the world. Developing iOS apps with Swift programing language gives an edge to these apps. This is why we will be discussing the new version Swift 5 features in this blog.

what are the features of swift programming

A strong reference cycle can occur if two instances each strongly reference each other (e.g. A references B, B references A). Since neither instances reference count can ever reach zero neither is ever deallocated, resulting in a memory leak. Swift provides the keywords weak and unowned to prevent strong reference cycles. These keywords allow an instance to be referenced without incrementing its reference count. Weak references must be optional variables, since they can change and become nil.[93] Attempting to access an unowned value that has already been deallocated results in a runtime error.

While the need to exclusively import C++ files is a rare case, you should be aware that Swift doesn’t have that supported. To use the C++ code, an Objective-C or C wrapper must be created between Swift and C++. 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, the language was designed to be safe, fast, and expressive. The Swift language is constantly evolving, and the community continues to grow.

Swift uses the Actor model to isolate mutable state, allowing different tasks to mutate shared state in a safe manner. Actors are declared with the actor keyword and are reference types, like classes. Only one task may access the mutable state of an actor at the same time.

It was the primary programming language used for OS X and iOS development before Swift came along in 2014. 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. Swift already supports all Apple platforms and Linux, with community members actively working to port to even more platforms. With SourceKit-LSP, the community is also working to integrate Swift support into a wide-variety of developer tools. We’re excited to see more ways in which Swift makes software safer and faster, while also making programming more fun. It includes low-level primitives such as types, flow control, and operators.

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