memory address of empty swift struct

// https://stackoverflow.com/a/45777692/5536516

import Foundation

func memoryAddress(of structPointer: UnsafeMutableRawPointer) -> String {
    return structPointer.debugDescription
}

struct S {/* let foo = 1 */}
var s = S()

struct T {/* let bar = 1 */}
var t = T()

let m = memoryAddress(of: &s)
let n = memoryAddress(of: &s)
let o = memoryAddress(of: &t)

// different addresses
print("m = \(m)")
print("n = \(n)")
print("o = \(o)")

// same addresses
print("directly = \(memoryAddress(of: &s))")
print("directly = \(memoryAddress(of: &s))")
print("directly = \(memoryAddress(of: &t))")