Swift：符合协议的AnyClass变量

Question

I have a static function I want to call on a class conforming to a protocol.

protocol P {
    static func f();
}

class C: P {
    static func f() {}
}

Is there a way to store C.self as a variable with a type that conforms to the protocol? Below does not compile, but it's what I'm ideally trying to do:

let a: AnyClass<P> = C.self;
a.f();

Answer 1

The type of the object you are trying to store with C.self is C.Type .

The Type C conforms to the protocol P

If you want to store your object by ensuring it conforms to P , use P.Type as the type.

Example:

let myObject: P.Type = C.self;
myObject.f();