Be careful when providing default implementations to your protocols

protocol_extensions_caveats.swift

import Foundation

protocol People {
    var eat: String { get } // 1) try to comment this
    var dislike: String { get } // 2) Try to comment this
}

//3) Try to rename one of the above

extension People {
    var eat: String {
        return "Pineapple Pizza"
    }
    
    var dislike: String {
        return "Vespa"
    }
}

struct Giuseppe: People {
    var eat: String {
        return "Margherita"
    }

    
    var dislike: String {
        return "Pineapple"
    }
}

let giuseppe: Giuseppe = Giuseppe()
print("Real Giuseppe eat: \(giuseppe.eat)")
print("Real Giuseppe dislike: \(giuseppe.dislike)")

let fakeGiuseppe: People = Giuseppe()
print("Fake Giuseppe eat: \(fakeGiuseppe.eat)")
print("Fake Giuseppe dislike: \(fakeGiuseppe.dislike)")