Swift: check if generic type conforms to protocol

Question

I have a protocol that I defined like so:

protocol MyProtocol {
   ...
}

I also have a generic struct:

struct MyStruct <         


        

Answer 1

A bit late but you can test if something responds to protocol with as ? test:

if let currentVC = myViewController as? MyCustomProtocol {
    // currentVC responds to the MyCustomProtocol protocol =]
}

EDIT: a bit shorter:

if let _ = self as? MyProtocol {
    // match
}

And using a guard:

guard let _ = self as? MyProtocol else {
    // doesn't match
    return
}