gistfile1.swift

import UIKit

protocol myProtocol {
    func dothatthing () -> Void
}

var array : [protocol<myProtocol>] = []

class A : myProtocol {
    func dothatthing() {
        println("Class A")
    }
}

let foo = A()
let bar = A()
array.append(foo)
array.append(bar)

for x in array {
    // The following does not compute
    if x === bar {
        println("We got it!")
    }
    else {
        println("We have not it")
    }
}

import UIKit

protocol myProtocol {
func dothatthing () -> Void
}

var array : [protocol] = []

class A : myProtocol {
func dothatthing() {
println("Class A")
}
}

let foo = A()
let bar:A = A()
array.append(foo)
array.append(bar)

for x in array {
// The following does compute

let test = x as? A

if bar === test {
    println("We got it!")
}else{
    println("We have not it")
}

}