Swift 1.2 now supports static variables/constants in classes. So you can just use a static constant:

class MySingleton {

    static let sharedMySingleton = MySingleton()

    private init() {
        // ...
    }
}

Swift 1.2 or later now supports static variables/constants in classes. So you can just use a static constant:

class MySingleton {

    static let sharedMySingleton = MySingleton()

    private init() {
        // ...
    }
}