Page 74

13. Swift – Characters


A character in Swift is a single character String literal, addressed by the data type Character. Take a look at the following example. It uses two Character constants: import Cocoa

let char1: Character = "A" let char2: Character = "B"

println("Value of char1 \(char1)") println("Value of char2 \(char2)") When the above code is compiled and executed, it produces the following result: Value of char1 A Value of char2 B If you try to store more than one character in a Character type variable or constant, then Swift will not allow that. Try to type the following example in Swift Playground and you will get an error even before compilation. import Cocoa

// Following is wrong in Swift let char: Character = "AB"

println("Value of char \(char)")

Empty Character Variables It is not possible to create an empty Character variable or constant which will have an empty value. The following syntax is not possible: import Cocoa

// Following is wrong in Swift let char1: Character = "" var char2: Character = "" 62

​Swift is just a effective and user-friendly programming language for macOS, iOS, watchOS and ...