Review the code snippet.

This question belongs to Swift Programming Language , specifically the domain covering structs, properties, methods, and initializers .

A computed property does not store a value directly. Instead, it returns a value calculated from other data. That is why description is a computed property: it returns a string based on content.

A memberwise initializer is automatically provided by Swift for structs when their stored properties are initialized through parameters. So Document(content: " Greetings! " ) is using the struct’s memberwise initializer.

A type property belongs to the type itself rather than to an instance. In Swift, static var docCount = 0 is a type property because it is declared with static.

An instance method is a function that belongs to an instance of the struct or class. The display() method uses the instance’s content, so it is an instance method.

A type method is a method declared with static and belongs to the type itself. So static func increment() is a type method because it changes the shared type property docCount.