gistfile1.txt

func address(o: UnsafeRawPointer) -> Int {
    return Int(bitPattern: o)
}

struct myStruct {
    var a: String
}

class myClas {}

//struct
var struct1 = myStruct(a: "5")
var struct2 = struct1
print("struct1 \(NSString(format: "%p", address(o: &struct1)))")

print("struct2 \(NSString(format: "%p", address(o: &struct2)))")

//Class
var class1 = myClas()
var class2 = class1

print("class1 \(Unmanaged.passUnretained(class1).toOpaque())")
print("class2 \(Unmanaged.passUnretained(class2).toOpaque())")