Swift Array Extension to Map & Filter on Element instance functions

SwiftArrayMapFilterSelf.swift

extension Array {
    func mapSelf<T>(f: Element -> () -> T) -> [T] {
        return self.map{ f($0)() }
    }
    
    func filterSelf(includedElem: Element -> () -> Bool) -> [Element] {
        return self.filter{ includedElem($0)() }
    }
}


struct Person {
    let name: String
    func isEddie() -> Bool {
        return name == "Eddie"
    }
    
    func greet() -> String {
        return "Hello \(name)"
    }
}

let me = Person(name: "Eddie")
me.isEddie()
let x = me.greet()

let tony = Person(name: "Tony")

let bros = [me, tony]

let greets = bros.map { (p: Person) -> String in
    p.greet()
}

Person.greet(me)


let greets2 = bros.map{ Person.greet($0)()}
print(greets2)

Person.greet
let yaay1 = bros.mapSelf(Person.greet)
let yaay2 = bros.filterSelf(Person.isEddie)