Does Objective-C support Generics?

Question

I wonder whether Objective-C offers any support for generics?

For instance, consider a method:

-(void) sort: (NSMutableArray *) deck {
}

Is there any way for me to make it only deal with Deck of Cards?
Is something like this possible to enforce?

-(void) sort: (NSMutableArray <Card *>) deck {
}

Answer 1

Objective-C supports lightweight Generics since 2015, with the Xcode 7.

The Xcode 7 compiler will give you the compiler warning if there is a type mismatch.

For example, the following line will raise a compiler warning as the second object in the array causes type mismatch. The array allows only NSString objects.

NSArray <NSString *> *myArray = [@"str2", @1, @"str2"];