IDE containing tools for developing for iOS, iPadOS, macOS, watchOS, and tvOS.
Swift is a powerful and intuitive programming language developed by Apple for iOS, macOS, watchOS, and tvOS app development. It's designed to give developers more freedom than ever before. Swift is easy to use and open source, so anyone with an idea can create something incredible.
Swift was introduced at Apple's 2014 Worldwide Developers Conference (WWDC) to provide a safer, faster, and more expressive means for iOS and OS X app development. It was designed to be easy to learn and use, even for those who are new to programming. Swift is a statically typed language, which means it performs type checks before runtime, catching and fixing errors before your app is live.
Swift is often compared to other programming languages like Objective-C, Python, and Ruby. While Objective-C is a superset of C with added object-oriented features and dynamic runtime, Swift is safer and more modern, eliminating entire classes of unsafe code. Compared to Python and Ruby, Swift is faster and more efficient, while still providing high-level language features like closures and generics.
Xcode is the graphical interface you'll use to write Swift apps. Xcode includes the iOS SDK, tools, compilers, and frameworks you need to design, develop, write code, and debug an app for iOS.
Playgrounds are a revolutionary feature of Xcode that allow you to experiment with Swift code and see the results immediately, without the overhead of building and running an app.
Swift includes modern features developers love, while providing clear, expressive syntax. Some of the key features of Swift include:
Closures unified with function pointers: Swift's closures are similar to blocks in C and Objective-C and to lambdas in other programming languages.
Tuples and multiple return values: These provide compound data for simple values and can return multiple values from a function.
Generics: Swift provides powerful generics that are easier to use, eliminating boilerplate code and making your code more reusable and flexible.
Fast and concise iteration over a range or collection: Swift provides a variety of ways to iterate over ranges and collections, including for-in loops and map and filter functions.
Structs that support methods, extensions, and protocols: This allows you to create flexible, powerful custom data types that can provide functionality equivalent to classes.
Optionals and chaining: These ensure your code is clear about what values can be missing or nil.
Functional programming patterns: Swift has many features typically found in functional programming languages, such as map and filter.
Swift is a powerful, modern language that provides a variety of features to make coding easier, safer, and more fun. This course will guide you through the basics and beyond, so you can start building your own apps in no time.
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