defer syntax in Swift 1.2

gistfile1.txt

class defering{
//    func g <T>(T? -> T?){
//        
//    }
    var defers:[(Void -> Void)] = []

    
     func fer( df:Void -> Void){
        defers.append((df));
    }
    
    deinit{
        for f in defers{
            f();
        }
    }
}



func testingDef(){
    let de = defering()
    let a = 1;
    
    print("test1\n")
    let b = 2;
    
    de.fer{
        print("test2 a\(a)\n")
    }
    
    var test:Void -> Void = {
        print("tested!\n\n\n")
    }
    
    test()
    let c = 3;
    
    de.fer{
        print("test3 b\(b)  c\(c)\n")
    }
    
    let d = 1;
    
//    return;
    
    print("test4\n")
}

testingDef()