How to create array of unique object list in Swift

Question

How can we create unique object list in Swift language like NSSet & NSMutableSet in Objective-C.

Answer 1

Special case for classes derived from NSObject

given that default Equitable (& Hashable) conformance in NSObject is basically trash you'd better make sure you provide a proper

static func == (lhs: YourClassDerivedFromNSObject, rhs: YourClassDerivedFromNSObject) -> Bool {

implementation lest you want plucking the duplicates inserted into Set