Swift Functional Programming - Second Edition

Modern syntax

Swift has a modern syntax that eliminates the verbosity of programming languages such as Objective-C. For instance, the following code example shows an Objective-C class with a property and method. Objective-C classes are defined in two separate files (interface and implementation). The VerboseClass.h file defines an interface as a subclass of the NSObject class. It defines a property, ourArray, and a method, aMethod.

The implementation file imports the header class and provides an implementation for aMethod, as shown in the following code:

//  VerboseClass.h @interface VerboseClass: NSObject @property (nonatomic, strong) NSMutableArray *ourArray; - (void)aMethod:(NSMutableArray*)anArray; @end //  VerboseClass.m #import "VerboseClass.h" ...