Swift is a fantastic way to write software, whether it’s for phones, desktops, servers, or anything else that runs code. It’s a safe, fast, and interactive programming language that combines the best in modern language thinking with wisdom from the wider Apple engineering culture and the diverse contributions from its open-source community. The compiler is optimized for performance and the language is optimized for development, without compromising on either.
Swift is friendly to new programmers. It’s an industrial-quality programming language that’s as expressive and enjoyable as a scripting language. Writing Swift code in a playground lets you experiment with code and see the results immediately, without the overhead of building and running an app.
A tuple is a group of different values in a single compound value. It is an ordered list of elements. There are two ways of accessing the object data in a tuple i.e. by name or by position. In swift, a tuple can consist of multiple different types. It can support two values i.e. one of integer type, and the other of a string type. It is a legal command.
A protocol is a type that defines a blueprint of methods, properties and other requirements. A class, structure or enumeration can then adopt the protocol to implement those requirements. The protocol doesn't implement any functionality itself, but rather defines the functionality.
A circular reference happens when two instances hold a strong reference to each other, causing a memory leak because neither of the two instances will ever be deallocated. You'd solve the problem by breaking the strong circular reference by replacing one of the strong references with a weak or an unowned reference.
Swift programming language has speedily become one of the quick-growing languages in memoir. Swift makes us develop software which is incredibly fast, robust and secure. This language is the most useful programming language that is used to develop an application for macOS and iOS(iPad and iPhone).
Swift uses a standard set of basic data types for different purposes such as Boolean values, numbers, and strings.
Let keyword is immutable, it’s used to declare a constant variable, and the constant variable cannot be changed once they are initialized. Var keyword is mutable, and is used to declare a variant variable. These variant variables can change the run time.
Delegate is a design pattern, which is used to pass the data or communication between structs or classes. Delegate allows sending a message from one object to another object when a specific event happens and is used for handling table view and Collection View events.